A Missing Authentication for Critical Function vulnerability combined with a Generation of Error Message Containing Sensitive Information vulnerability in J-Web of Juniper Networks Junos OS on SRX Series and EX Series allows an unauthenticated, network-based attacker to access sensitive system information.

When a user logs in, a temporary file which contains the configuration of the device (as visible to that user) is created in the /cache folder. An unauthenticated attacker can then attempt to access such a file by sending a specific request to the device trying to guess the name of such a file. Successful exploitation will reveal configuration information.

This issue affects Juniper Networks Junos OS on SRX Series and EX Series: All versions earlier than 20.4R3-S9; 21.2 versions earlier than 21.2R3-S7; 21.3 versions earlier than 21.3R3-S5; 21.4 versions earlier than 21.4R3-S6; 22.1 versions earlier than 22.1R3-S5; 22.2 versions earlier than 22.2R3-S3; 22.3 versions earlier than 22.3R3-S2; 22.4 versions earlier than 22.4R3; 23.2 versions earlier than 23.2R1-S2, 23.2R2.

An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in J-Web of Juniper Networks Junos OS on SRX Series and EX Series allows an attacker to construct a URL that when visited by another user enables the attacker to execute commands with the target's permissions, including an administrator.

A specific invocation of the emitdebugnote method in webauthoperation.php will echo back the data it receives.

This issue affects Juniper Networks Junos OS on SRX Series and EX Series: All versions earlier than 20.4R3-S10; 21.2 versions earlier than 21.2R3-S8; 21.4 versions earlier than 21.4R3-S6; 22.1 versions earlier than 22.1R3-S5; 22.2 versions earlier than 22.2R3-S3; 22.3 versions earlier than 22.3R3-S2; 22.4 versions earlier than 22.4R3-S1; 23.2 versions earlier than 23.2R2; 23.4 versions earlier than 23.4R2.

An Improper Validation of Syntactic Correctness of Input vulnerability in Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause Denial of Service (DoS).

On all Junos OS MX Series and SRX Series platforms, when SIP ALG is enabled, and a specific SIP packet is received and processed, NAT IP allocation fails for genuine traffic, which causes Denial of Service (DoS). Continuous receipt of this specific SIP ALG packet will cause a sustained DoS condition.

NAT IP usage can be monitored by running the following command.

user@srx> show security nat resource-usage source-pool <sourcepoolname>

Pool name: sourcepoolname .. Address Factor-index Port-range Used Avail Total Usage X.X.X.X 0 Single Ports 50258 52342 62464 96% <<<<< - Alg Ports 0 2048 2048 0% This issue affects:

Juniper Networks Junos OS on MX Series and SRX Series

All versions earlier than 21.2R3-S6; 21.3 versions earlier than 21.3R3-S5; 21.4 versions earlier than 21.4R3-S5; 22.1 versions earlier than 22.1R3-S4; 22.2 versions earlier than 22.2R3-S3; 22.3 versions earlier than 22.3R3-S1; 22.4 versions earlier than 22.4R2-S2, 22.4R3; 23.2 versions earlier than 23.2R1-S1, 23.2R2.

A Double Free vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX Series allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS).

In a remote access VPN scenario, if a "tcp-encap-profile" is configured and a sequence of specific packets is received, a flowd crash and restart will be observed.

This issue affects Juniper Networks Junos OS on SRX Series:

All versions earlier than 20.4R3-S8; 21.2 versions earlier than 21.2R3-S6; 21.3 versions earlier than 21.3R3-S5; 21.4 versions earlier than 21.4R3-S5; 22.1 versions earlier than 22.1R3-S3; 22.2 versions earlier than 22.2R3-S3; 22.3 versions earlier than 22.3R3-S1; 22.4 versions earlier than 22.4R2-S2, 22.4R3.

An Improper Check for Unusual or Exceptional Conditions vulnerability in the flow daemon (flowd) of Juniper Networks Junos OS on SRX Series allows an attacker sending a specific, malformed ICMPv6 packet to cause the srxpfe process to crash and restart. Continued receipt and processing of these packets will repeatedly crash the srxpfe process and sustain the Denial of Service (DoS) condition.

During NAT64 translation, receipt of a specific, malformed ICMPv6 packet destined to the device will cause the srxpfe process to crash and restart.

This issue cannot be triggered using IPv4 nor other IPv6 traffic.

This issue affects Junos OS on SRX Series: all versions before 21.2R3-S10, all versions of 21.3, from 21.4 before 21.4R3-S12, all versions of 22.1, from 22.2 before 22.2R3-S8, all versions of 22.4, from 22.4 before 22.4R3-S9, from 23.2 before 23.2R2-S6, from 23.4 before 23.4R2-S7, from 24.2 before 24.2R2-S3, from 24.4 before 24.4R2-S3, from 25.2 before 25.2R1-S2, 25.2R2.

An Improper Handling of Exceptional Conditions vulnerability in packet processing of Juniper Networks Junos OS allows an unauthenticated, network-adjacent attacker sending a specifically malformed ICMP packet to cause an FPC to crash and restart, resulting in a Denial of Service (DoS).

When an ICMP packet is received with a specifically malformed IP header value, the FPC receiving the packet crashes and restarts. Due to the specific type of malformed packet, adjacent upstream routers would not forward the packet, limiting the attack surface to adjacent networks.

This issue only affects ICMPv4. ICMPv6 is not vulnerable to this issue.

This issue does not affect AFT-based line cards such as the MPC10, MPC11, LC4800, LC9600, and MX304.

This issue affects Junos OS:

all versions before 21.2R3-S9,  from 21.4 before 21.4R3-S10,  from 22.2 before 22.2R3-S7,  from 22.3 before 22.3R3-S4,  from 22.4 before 22.4R3-S5,  from 23.2 before 23.2R2-S3,  from 23.4 before 23.4R2-S3,  from 24.2 before 24.2R1-S2, 24.2R2.

A Heap-based Buffer Overflow vulnerability in the flexible PIC concentrator (FPC) of Juniper Networks Junos OS on EX2300, EX3400, EX4100, EX4300, EX4300MP, EX4400, EX4600, EX4650-48Y, and QFX5k Series allows an attacker to send a specific DHCP packet to the device, leading to an FPC crash and restart, resulting in a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition.

Under a rare timing scenario outside the attacker's control, memory corruption may be observed when DHCP Option 82 is enabled, leading to an FPC crash and affecting packet forwarding. Due to the nature of the heap-based overflow, exploitation of this vulnerability could also lead to remote code execution within the FPC, resulting in complete control of the vulnerable component. This issue affects Junos OS on EX2300, EX3400, EX4100, EX4300, EX4300MP, EX4400, EX4600, EX4650-48Y, and QFX5k Series:

All versions before 21.4R3-S9,  from 22.2 before 22.2R3-S5,  from 22.4 before 22.4R3-S5,  from 23.2 before 23.2R2-S3,  from 23.4 before 23.4R2-S3,  from 24.2 before 24.2R2.

An Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in the CLI of Juniper Networks Junos OS and Junos OS Evolved allows a high privileged, local attacker to escalated their privileges to root.

When a user provides specifically crafted arguments to the 'request system logout' command, these will be executed as root on the shell, which can completely compromise the device. This issue affects:

Junos OS:

all versions before 21.2R3-S9, 21.4 versions before 21.4R3-S8, 22.2 versions before 22.2R3-S6, 22.3 versions before 22.3R3-S3, 22.4 versions before 22.4R3-S6, 23.2 versions before 23.2R2-S1, 23.4 versions before 23.4R1-S2, 23.4R2;

Junos OS Evolved:

all versions before 22.4R3-S6-EVO, 23.2-EVO versions before 23.2R2-S1-EVO, 23.4-EVO versions before 23.4R1-S2-EVO, 23.4R2-EVO.

A UI Discrepancy for Security Feature

vulnerability in the UI of Juniper Networks Junos OS on VM Host systems allows a network-based, unauthenticated attacker to access the device.

On VM Host Routing Engines (RE), even if the configured public key for root has been removed, remote users which are in possession of the corresponding private key can still log in as root. This issue affects Junos OS:

all versions before 22.2R3-S7, 22.4 versions before 22.4R3-S5, 23.2 versions before 23.2R2-S3, 23.4 versions before 23.4R2-S3, 24.2 versions before 24.2R1-S2, 24.2R2.

An Improper Input Validation vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS). When a BGP update message is received over an established BGP session, and that message contains a specific, optional transitive attribute, this session will be torn down with an update message error. This issue cannot propagate beyond an affected system as the processing error occurs as soon as the update is received. This issue is exploitable remotely as the respective attribute can propagate through unaffected systems and intermediate AS (if any). Continuous receipt of a BGP update containing this attribute will create a sustained Denial of Service (DoS) condition. Some customers have experienced these BGP session flaps which prompted Juniper SIRT to release this advisory out of cycle before fixed releases are widely available as there is an effective workaround.

This issue affects: Juniper Networks Junos OS 15.1R1 and later versions prior to 20.4R3-S8; 21.1 version 21.1R1 and later versions prior to 21.2R3-S6; 21.3 versions prior to 21.3R3-S5; 21.4 versions prior to 21.4R3-S4; 22.1 versions prior to 22.1R3-S4; 22.2 versions prior to 22.2R3-S2; 22.3 versions prior to 22.3R2-S2, 22.3R3-S1; 22.4 versions prior to 22.4R2-S1, 22.4R3; 23.1 versions prior to 23.1R1-S1, 23.1R2.

Juniper Networks Junos OS Evolved All versions prior to 20.4R3-S8-EVO; 21.1 version 21.1R1-EVO and later versions prior to 21.2R3-S6-EVO; 21.3 versions prior to 21.3R3-S5-EVO; 21.4 versions prior to 21.4R3-S4-EVO; 22.1 versions prior to 22.1R3-S4-EVO; 22.2 versions prior to 22.2R3-S2-EVO; 22.3 versions prior to 22.3R2-S2-EVO, 22.3R3-S1-EVO; 22.4 versions prior to 22.4R2-S1-EVO, 22.4R3-EVO; 23.1 versions prior to 23.1R1-S1-EVO, 23.1R2-EVO.

An Improper Check for Unusual or Exceptional Conditions vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on

SRX1600, SRX2300, SRX 4000 Series, and SRX5000 Series with SPC3

allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).

If a sequence of specific PIM packets is received, this will cause a flowd crash and restart.

This issue affects Junos OS:

all versions before 21.2R3-S9, 21.4 versions before 21.4R3-S11, 22.2 versions before 22.2R3-S7, 22.4 versions before 22.4R3-S6, 23.2 versions before 23.2R2-S4, 23.4 versions before 23.4R2-S4, 24.2 versions before 24.2R2.

This is a similar, but different vulnerability than the issue reported as

CVE-2024-47503, published in JSA88133.

An Improper Control of a Resource Through its Lifetime vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network-based attacker to cause a Denial-of-Service (DoS).

On devices with SRv6 (Segment Routing over IPv6) enabled, an attacker can send a malformed BGP UPDATE packet which will cause the rpd to crash and restart. Continued receipt of these UPDATE packets will cause a sustained DoS condition.

This issue affects iBGP and eBGP, and both IPv4 and IPv6 are affected by this vulnerability.This issue affects Junos OS:

All versions before 21.2R3-S9,  from 21.4 before 21.4R3-S10,  from 22.2 before 22.2R3-S5,  from 22.3 before 22.3R3-S4,  from 22.4 before 22.4R3-S3,  from 23.2 before 23.2R2-S2,  from 23.4 before 23.4R2;

and Junos OS Evolved:

All versions before 21.2R3-S9-EVO,  from 21.4-EVO before 21.4R3-S10-EVO,  from 22.2-EVO before 22.2R3-S5-EVO,  from 22.3-EVO before 22.3R3-S4-EVO,  from 22.4-EVO before 22.4R3-S3-EVO, from 23.2-EVO before 23.2R2-S2-EVO,  from 23.4-EVO before 23.4R2-EVO.

An Improper Check for Unusual or Exceptional Conditions vulnerability in the pfe (packet forwarding engine) of Juniper Networks Junos OS on MX Series causes a port within a pool to be blocked leading to Denial of Service (DoS).

In a DS-Lite (Dual-Stack Lite) and NAT (Network Address Translation) scenario, when crafted IPv6 traffic is received and prefix-length is set to 56, the ports assigned to the user will not be freed.  Eventually, users cannot establish new connections. Affected FPC/PIC need to be manually restarted to recover. Following is the command to identify the issue:

user@host> show services nat source port-block      HostIP                     ExternalIP                   PortBlock      PortsUsed/       BlockState/                                                               Range           PortsTotal       LeftTime(s)     2001::                        x.x.x.x                     58880-59391     256/2561         Active/-       >>>>>>>>port still usedThis issue affects Junos OS on MX Series:

from 21.2 before 21.2R3-S8,  from 21.4 before 21.4R3-S7,  from 22.1 before 22.1R3-S6,  from 22.2 before 22.2R3-S4,  from 22.3 before 22.3R3-S3,  from 22.4 before 22.4R3-S2,  from 23.2 before 23.2R2-S1,  from 23.4 before 23.4R1-S2, 23.4R2.

This issue does not affect versions before 20.2R1.

An Out-of-Bounds Read vulnerability in

the routing protocol daemon (rpd) of

Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, logically adjacent BGP peer sending a specifically malformed BGP packet to cause rpd to crash and restart, resulting in a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition.

This issue only affects systems configured in either of two ways:

systems with BGP traceoptions enabled

systems with BGP family traffic-engineering (BGP-LS) configured

and can be exploited from a directly connected and configured BGP peer.

This issue affects iBGP and eBGP

with

any address family

configured, and both IPv4 and IPv6 are affected by this vulnerability.

This issue affects:

Junos OS:

from 21.4 before 21.4R3-S9,  from 22.2 before 22.2R3-S5,  from 22.3 before 22.3R3-S4,  from 22.4 before 22.4R3-S5,  from 23.2 before 23.2R2-S3,  from 23.4 before 23.4R2-S3,  from 24.2 before 24.2R1-S2, 24.2R2;

Junos OS Evolved:

from 21.4-EVO before 21.4R3-S9-EVO,  from 22.2-EVO before 22.2R3-S5-EVO,  from 22.3-EVO before 22.3R3-S4-EVO,  from 22.4-EVO before 22.4R3-S5-EVO,  from 23.2-EVO before 23.2R2-S3-EVO,  from 23.4-EVO before 23.4R2-S2-EVO,  from 24.2-EVO before 24.2R1-S2-EVO, 24.2R2-EVO.

This issue does not affect versions of Junos OS prior to 21.3R1.

This issue does not affect versions of Junos OS Evolved prior to 21.3R1-EVO.

This is a similar, but different vulnerability than the issue reported as CVE-2024-39516.

An Improper Handling of Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker sending a specific BGP update packet to cause rpd to crash and restart, resulting in a Denial of Service (DoS).

Continuous receipt and processing of this packet will create a sustained Denial of Service (DoS) condition.

This issue affects iBGP and eBGP, and both IPv4 and IPv6 are affected by this vulnerability.

This issue affects Junos OS:

from 21.4 before 21.4R3-S9,  from 22.2 before 22.2R3-S5,  from 22.3 before 22.3R3-S4, from 22.4 before 22.4R3-S5,  from 23.2 before 23.2R2-S3,  from 23.4 before 23.4R2-S3,  from 24.2 before 24.2R1-S2, 24.2R2;

This issue does not affect versions prior to 21.1R1.

Junos OS Evolved:

from 21.4 before 21.4R3-S9-EVO,  from 22.2 before 22.2R3-S5-EVO,  from 22.3 before 22.3R3-S4-EVO, from 22.4 before 22.4R3-S5-EVO,  from 23.2 before 23.2R2-S3-EVO,  from 23.4 before 23.4R2-S3-EVO,  from 24.2 before 24.2R1-S2-EVO, 24.2R2-EVO.

This issue does not affect versions prior to 21.1R1-EVO

A NULL Pointer Dereference vulnerability in the flow daemon (flowd) of Juniper Networks Junos OS on SRX Series allows an attacker causing specific, valid control traffic to be sent out of a Dual-Stack (DS) Lite tunnel to crash the flowd process, resulting in a Denial of Service (DoS).  Continuous triggering of specific control traffic will create a sustained Denial of Service (DoS) condition.

On all SRX platforms, when specific, valid control traffic needs to be sent out of a DS-Lite tunnel, a segmentation fault occurs within the flowd process, resulting in a network outage until the flowd process restarts.

This issue affects Junos OS on SRX Series: All versions before 21.2R3-S9, from 21.4 before 21.4R3-S9, from 22.2 before 22.2R3-S5, from 22.4 before 22.4R3-S6, from 23.2 before 23.2R2-S3, from 23.4 before 23.4R2.

A Signed to Unsigned Conversion Error vulnerability in the Layer 2 Control Protocol daemon (l2cpd) of Juniper Networks Junos OS and Juniper Networks Junos OS Evolved allows an unauthenticated adjacent attacker sending a specifically malformed LLDP TLV to cause the l2cpd process to crash and restart, causing a Denial of Service (DoS).  Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition.

When an LLDP telemetry subscription is active, receipt of a specifically malformed LLDP TLV causes the l2cpd process to crash and restart.

This issue affects:

Junos OS:

All versions before 21.2R3-S9,  from 21.4 before 21.4R3-S10,  from 22.2 before 22.2R3-S6,  from 22.4 before 22.4R3-S6,  from 23.2 before 23.2R2-S3,  from 23.4 before 23.4R2-S4,  from 24.2 before 24.2R2;

Junos OS Evolved:

All versions before 21.4R3-S10-EVO, from 22.2-EVO before 22.2R3-S6-EVO,  from 22.4-EVO before 22.4R3-S6-EVO,  from 23.2-EVO before 23.2R2-S3-EVO,  from 23.4-EVO before 23.4R2-S4-EVO,  from 24.2-EVO before 24.2R2-EVO.

A Missing Release of Memory after Effective Lifetime vulnerability in the packet forwarding engine (PFE) of Juniper Networks Junos OS on MX Series allows an unauthenticated adjacent attacker to cause a Denial-of-Service (DoS).

In a subscriber management scenario, login/logout activity triggers a memory leak, and the leaked memory gradually increments and eventually results in a crash.                 user@host> show chassis fpc                                        Temp    CPU Utilization (%)   CPU Utilization (%)   Memory     Utilization (%)                       Slot State       (C)     Total   Interrupt     1min   5min  15min    DRAM (MB)  Heap   Buffer

2 Online         36       10         0          9     8     9        32768      26         0

This issue affects Junos OS on MX Series: All versions before 21.2R3-S9 from 21.4 before 21.4R3-S10 from 22.2 before 22.2R3-S6 from 22.4 before 22.4R3-S5 from 23.2 before 23.2R2-S3 from 23.4 before 23.4R2-S3 from 24.2 before 24.2R2.

An Improper Input Validation vulnerability in the Juniper DHCP Daemon (jdhcpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause the jdhcpd process to crash resulting in a Denial of Service (DoS).

When a specifically malformed DHCP packet is received from a DHCP client, the jdhcpd process crashes, which will lead to the unavailability of the DHCP service and thereby resulting in a sustained DoS. The DHCP process will restart automatically to recover the service.

This issue will occur when dhcp-security is enabled.  This issue affects Junos OS:

All versions before 21.2R3-S9,  from 21.4 before 21.4R3-S10,  from 22.2 before 22.2R3-S6,  from 22.4 before 22.4R3-S6,  from 23.2 before 23.2R2-S3,  from 23.4 before 23.4R2-S4,  from 24.2 before 24.2R2;

Junos OS Evolved:  from 22.4 before 22.4R3-S6-EVO,  from 23.2 before 23.2R2-S3-EVO,  from 23.4 before 23.4R2-S4-EVO,  from 24.2 before 24.2R2-EVO.

.

An Improper Input Validation vulnerability in the syslog stream TCP transport of Juniper Networks Junos OS on MX240, MX480 and MX960 devices with MX-SPC3 Security Services Card allows an unauthenticated, network-based attacker, to send specific spoofed packets to cause a CPU Denial of Service (DoS) to the MX-SPC3 SPUs.

Continued receipt and processing of these specific packets will sustain the DoS condition.

This issue affects Junos OS: All versions before 22.2R3-S6, from 22.4 before 22.4R3-S4, from 23.2 before 23.2R2-S3, from 23.4 before 23.4R2-S4, from 24.2 before 24.2R1-S2, 24.2R2

An indicator of compromise will indicate the SPC3 SPUs utilization has spiked.

For example:     user@device> show services service-sets summary Service sets CPU Interface configured Bytes used Session bytes used Policy bytes used utilization "interface" 1 "bytes" (percent%) "sessions" ("percent"%) "bytes" ("percent"%) 99.97 % OVLD <<<<<< look for high CPU usage

This is a similar, but different vulnerability than the issue reported as CVE-2024-39549.

A double-free vulnerability in the routing process daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an attacker to send a malformed BGP Path attribute update which allocates memory used to log the bad path attribute. This double free of memory is causing an rpd crash, leading to a Denial of Service (DoS).

This issue affects:

Junos OS:  from 22.4 before 22.4R3-S4.

Junos OS Evolved: from 22.4 before 22.4R3-S4-EVO.

An Improper Check for Unusual or Exceptional Conditions vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX4600 and SRX5000 Series allows an unauthenticated and logically adjacent attacker to cause a Denial-of-Service (DoS).

If in a multicast scenario a sequence of

specific PIM packets is received, this will cause a flowd crash and restart, which leads to momentary service interruption. This issue affects Junos OS on SRX 4600 and SRX 5000 Series:

All versions before 21.4R3-S9, 22.2 versions before 22.2R3-S5, 22.3 versions before 22.3R3-S4, 22.4 versions before 22.4R3-S4, 23.2 versions before 23.2R2-S2, 23.4 versions before 23.4R2,  24.2 versions before 24.2R1-S1, 24.2R2.

An Improper Check for Unusual or Exceptional Conditions vulnerability in the routing protocol daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network based attacker to cause a Denial of Service (DoS).

In a scenario where BGP Monitoring Protocol (BMP) is configured with rib-in pre-policy monitoring, receiving a BGP update with a specifically malformed AS PATH attribute over an established BGP session, can cause an RPD crash and restart.

This issue affects:

Junos OS:

All versions before 21.2R3-S8, 21.4 versions before 21.4R3-S8, 22.2 versions before 22.2R3-S4, 22.3 versions before 22.3R3-S3, 22.4 versions before 22.4R3-S2, 23.2 versions before 23.2R2-S1, 23.4 versions before 23.4R1-S2, 23.4R2;

Junos OS Evolved:

All versions before 21.2R3-S8-EVO, 21.4 versions before 21.4R3-S8-EVO, 22.2 versions before 22.2R3-S4-EVO, 22.3 versions before 22.3R3-S3-EVO, 22.4 versions before 22.4R3-S2-EVO, 23.2 versions before 23.2R2-S1-EVO, 23.4 versions before 23.4R1-S2-EVO, 23.4R2-EVO.

An Improper Handling of Exceptional Conditions vulnerability in the rpd-server of Juniper Networks Junos OS and Junos OS Evolved within cRPD allows an unauthenticated network-based attacker sending crafted TCP traffic to the routing engine (RE) to cause a CPU-based Denial of Service (DoS).

If specially crafted TCP traffic is received by the control plane, or a TCP session terminates unexpectedly, it will cause increased control plane CPU utilization by the rpd-server process.

While not explicitly required, the impact is more severe when RIB sharding is enabled.

Task accounting shows unexpected reads by the RPD Server jobs for shards:

user@junos> show task accounting detail ... read:RPD Server.0.0.0.0+780.192.168.0.78+48886 TOT:00000003.00379787 MAX:00000000.00080516 RUNS: 233888\ read:RPD Server.0.0.0.0+780.192.168.0.78+49144 TOT:00000004.00007565 MAX:00000000.00080360 RUNS: 233888\ read:RPD Server.0.0.0.0+780.192.168.0.78+49694 TOT:00000003.00600584 MAX:00000000.00080463 RUNS: 233888\ read:RPD Server.0.0.0.0+780.192.168.0.78+50246 TOT:00000004.00346998 MAX:00000000.00080338 RUNS: 233888\

This issue affects:

Junos OS with cRPD:

All versions before 21.2R3-S8,  21.4 before 21.4R3-S7,  22.1 before 22.1R3-S6,  22.2 before 22.2R3-S4,  22.3 before 22.3R3-S3,  22.4 before 22.4R3-S2,  23.2 before 23.2R2-S2,  24.2 before 24.2R2;

Junos OS Evolved with cRPD:

All versions before 21.4R3-S7-EVO,  22.2 before 22.2R3-S4-EVO,  22.3 before 22.3R3-S3-EVO,  22.4 before 22.4R3-S2-EVO,  23.2 before 23.2R2-EVO.

An Improper Handling of Exceptional Conditions vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a network-based, unauthenticated attacker to cause Denial of Service (DoS).

When a BGP UPDATE with malformed path attribute is received over an established BGP session, rpd crashes and restarts.

Continuous receipt of a BGP UPDATE with a specifically malformed path attribute will create a sustained Denial of Service (DoS) condition for impacted devices. While this issue affects systems running 32-bit and 64-bit systems, the probability of impact on 64-bit system is extremely low.  According to KB25803 https://supportportal.juniper.net/s/article/Junos-How-to-check-if-Junos-OS-is-64-or-32-bit-on-a-router , customers can confirm 32-bit or 64-bit system via the ' show version detail ' command:

lab@router> show version detail| match 32      JUNOS 32-bit kernel Software Suite

lab@router> show version detail| match 64      JUNOS 64-bit kernel Software Suite

This issue affects:

Juniper Networks Junos OS:

All versions before 21.4R3-S8,  from 22.2 before 22.2R3-S4,  from 22.4 before 22.4R3-S3,  from 23.2 before 23.2R2-S1,  from 23.4 before 23.4R1-S2, 23.4R2.

Juniper Networks Junos OS Evolved:  All versions before 21.4R3-S8-EVO, from 22.2 before 22.2R3-S4-EVO, from 22.4 before 22.4R3-S3-EVO, from 23.2 before 23.2R2-S1-EVO, from 23.4 before 23.4R1-S2-EVO, 23.4R2-EVO.

A Missing Release of Memory after Effective Lifetime vulnerability in the Packet Forwarding Engine (PFE) of the Juniper Networks Junos OS on the MX Series platforms with Trio-based FPCs allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS).

In case of channelized Modular Interface Cards (MICs), every physical interface flap operation will leak heap memory. Over a period of time, continuous physical interface flap operations causes local FPC to eventually run out of memory and crash.

Below CLI command can be used to check the memory usage over a period of time:

user@host> show chassis fpc

Temp CPU Utilization (%)   CPU Utilization (%) Memory   Utilization (%)   Slot State     (C)  Total  Interrupt     1min   5min   15min DRAM (MB) Heap     Buffer

0 Online       43     41         2                           2048       49         14

1 Online       43     41         2                           2048       49         14

2 Online       43     41         2                           2048       49         14

This issue affects Junos OS on MX Series:

All versions before 21.2R3-S7,  from 21.4 before 21.4R3-S6,  from 22.1 before 22.1R3-S5,  from 22.2 before 22.2R3-S3,  from 22.3 before 22.3R3-S2,  from 22.4 before 22.4R3,  from 23.2 before 23.2R2,  from 23.4 before 23.4R2.

A Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in the AgentD process of Juniper Networks Junos OS allows an attacker who is already causing impact to established sessions which generates counter changes picked up by the AgentD process during telemetry polling, to move the AgentD process into a state where AgentD attempts to reap an already destroyed sensor. This reaping attempt then leads to memory corruption causing the FPC to crash which is a Denial of Service (DoS).

The FPC will recover automatically without user intervention after the crash. This issue affects Junos OS:

All versions before 21.4R3-S9 From 22.2 before 22.2R3-S5, From 22.3 before 22.3R3-S4, From 22.4 before 22.4R3-S3, From 23.2 before 23.2R2-S2, From 23.4 before 23.4R2.

This issue does not affect Junos OS Evolved.

An Uncontrolled Resource Consumption vulnerability in the http daemon (httpd) of Juniper Networks Junos OS on SRX Series, QFX Series, MX Series and EX Series allows an unauthenticated, network-based attacker to cause Denial-of-Service (DoS).

An attacker can send specific HTTPS connection requests to the device, triggering the creation of processes that are not properly terminated. Over time, this leads to resource exhaustion, ultimately causing the device to crash and restart.

The following command can be used to monitor the resource usage: user@host> show system processes extensive | match mgd | count

This issue affects Junos OS on SRX Series and EX Series: All versions before 21.4R3-S7, from 22.2 before 22.2R3-S4, from 22.3 before 22.3R3-S3, from 22.4 before 22.4R3-S2, from 23.2 before 23.2R2-S1, from 23.4 before 23.4R1-S2, 23.4R2.

An Improper Handling of Length Parameter Inconsistency vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a logically adjacent BGP peer sending a specifically malformed BGP packet to cause rpd to crash and restart, resulting in a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition.

Only systems configured for Ethernet Virtual Private Networking (EVPN) signaling are vulnerable to this issue.

This issue affects iBGP and eBGP, and both IPv4 and IPv6 are affected by this vulnerability.This issue affects:

Junos OS:

all versions before 21.4R3-S11,  from 22.2 before 22.2R3-S7,  from 22.4 before 22.4R3-S7,  from 23.2 before 23.2R2-S4,  from 23.4 before 23.4R2-S5,  from 24.2 before 24.2R2-S1,  from 24.4 before 24.4R1-S3, 24.4R2;

Junos OS Evolved:

all versions before 22.2R3-S7-EVO,  from 22.4-EVO before 22.4R3-S7-EVO,  from 23.2-EVO before 23.2R2-S4-EVO,  from 23.4-EVO before 23.4R2-S5-EVO,  from 24.2-EVO before 24.2R2-S1-EVO,  from 24.4-EVO before 24.4R1-S3-EVO, 24.4R2-EVO.

An Expected Behavior Violation vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker sending a valid BGP UPDATE packet to cause a BGP session reset, resulting in a Denial of Service (DoS).

Continuous receipt and processing of this packet will create a sustained Denial of Service (DoS) condition.

This issue affects iBGP and eBGP and both IPv4 and IPv6 are affected by this vulnerability.

This issue affects Junos OS:

All versions before 21.2R3-S9, from 21.4 before 21.4R3-S11, from 22.2 before 22.2R3-S7, from 22.4 before 22.4R3-S7, from 23.2 before 23.2R2-S4, from 23.4 before 23.4R2-S4, from 24.2 before 24.2R2, from 24.4 before 24.4R1-S3, 24.4R2

Junos OS Evolved:

All versions before 22.2R3-S7-EVO, from 22.4-EVO before 22.4R3-S7-EVO, from 23.2-EVO before 23.2R2-S4-EVO, from 23.4-EVO before 23.4R2-S4-EVO, from 24.2-EVO before 24.2R2-EVO, from 24.4-EVO before 24.4R1-S3-EVO, 24.4R2-EVO.