An Out-of-bounds Write vulnerability in the SNMP daemon (snmpd) of Juniper Networks Junos OS and Junos OS Evolved allows an authenticated network-based attacker sending specific valid SNMPv3 queries to trigger a memory leak. Over time, continuous receipt of these queries will result in snmpd process memory exhaustion, resulting in a process crash and restart, impacting the ability to monitor the system via SNMP.

Memory usage can be monitored using the following command:

user@device> show system processes extensive | match snmpd

This issue affects:

Junos OS:

all versions 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; from 23.4 before 23.4R2.

Junos OS Evolved: all versions before 21.2R3-S8-EVO; from 21.4 before 21.4R3-S7-EVO; all versions of 22.1-EVO, from 22.2 before 22.2R3-S4-EVO; from 22.3 before 22.3R3-S3-EVO; all versions of 22.4-EVO, from 23.2 before 23.2R2-EVO; from 23.4 before 23.4R2-EVO.

A Missing Release of Memory after Effective Lifetime vulnerability in Routing Protocol Daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause an rpd crash, leading to Denial of Service (DoS).

On all Junos OS and Junos OS Evolved platforms, when traffic engineering is enabled for OSPF or ISIS, and a link flaps, a patroot memory leak is observed. This memory leak, over time, will lead to an rpd crash and restart.

The memory usage can be monitored using the below command.

user@host> show task memory detail | match patroot This issue affects:

Juniper Networks Junos OS

All versions earlier than 21.2R3-S3; 21.3 versions earlier than 21.3R3-S5; 21.4 versions earlier than 21.4R3-S3; 22.1 versions earlier than 22.1R3; 22.2 versions earlier than 22.2R3.

Juniper Networks Junos OS Evolved

All versions earlier than 21.3R3-S5-EVO; 21.4 versions earlier than 21.4R3-EVO; 22.1 versions earlier than 22.1R3-EVO; 22.2 versions earlier than 22.2R3-EVO.

A Heap-based Buffer Overflow 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).

If an attacker sends a specific BGP UPDATE message to the device, this will cause a memory overwrite and therefore an RPD crash and restart in the backup Routing Engine (RE). Continued receipt of these packets will cause a sustained Denial of Service (DoS) condition in the backup RE.

The primary RE is not impacted by this issue and there is no impact on traffic.

This issue only affects devices with NSR enabled.

Note: NSR is not supported on the SRX Series and is therefore not affected by this vulnerability. This issue requires an attacker to have an established BGP session to a system affected by the issue. This issue affects both eBGP and iBGP implementations.

This issue affects:

Juniper Networks Junos OS

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-S5; 22.1 versions earlier than 22.1R3-S4; 22.2 versions earlier than 22.2R3-S2; 22.3 versions earlier than 22.3R3-S1; 22.4 versions earlier than 22.4R2-S2, 22.4R3; 23.1 versions earlier than 23.1R2; 23.2 versions earlier than 23.2R1-S2, 23.2R2.

Juniper Networks Junos OS Evolved

All versions earlier than 21.3R3-S5-EVO; 21.4-EVO versions earlier than 21.4R3-S5-EVO; 22.1-EVO versions earlier than 22.1R3-S4-EVO; 22.2-EVO versions earlier than 22.2R3-S2-EVO; 22.3-EVO versions later than 22.3R1-EVO; 22.4-EVO versions earlier than 22.4R2-S2-EVO, 22.4R3-EVO; 23.1-EVO versions earlier than 23.1R2-EVO; 23.2-EVO versions earlier than 23.2R1-S2-EVO, 23.2R2-EVO.

An Improper Handling of Exceptional Conditions vulnerability in BGP session processing of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network-based attacker, using specific timing outside the attacker's control, to flap BGP sessions and cause the routing protocol daemon (rpd) process to crash and restart, leading to a Denial of Service (DoS) condition. Continued BGP session flapping will create a sustained Denial of Service (DoS) condition.

This issue only affects routers configured with non-stop routing (NSR) enabled. Graceful Restart (GR) helper mode, enabled by default, is also required for this issue to be exploitable.

Note: NSR is not supported on the SRX Series and is therefore not affected by this vulnerability. When the BGP session flaps on the NSR-enabled router, the device enters GR-helper/LLGR-helper mode due to the peer having negotiated GR/LLGR-restarter capability and the backup BGP requests for replication of the GR/LLGR-helper session, master BGP schedules, and initiates replication of GR/LLGR stale routes to the backup BGP. In this state, if the BGP session with the BGP peer comes up again, unsolicited replication is initiated for the peer without cleaning up the ongoing GR/LLGR-helper mode replication. This parallel two instances of replication for the same peer leads to the assert if the BGP session flaps again.

This issue affects:

Juniper Networks Junos OS

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-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.

Juniper Networks Junos OS Evolved

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

An Improper Check or Handling of Exceptional Conditions vulnerability in the Layer-2 control protocols daemon (l2cpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause a Denial of Service (DoS).

When a malformed LLDP packet is received, l2cpd will crash and restart. The impact of the l2cpd crash is reinitialization of STP protocols (RSTP, MSTP or VSTP), and MVRP and ERP. Also, if any services depend on LLDP state (like PoE or VoIP device recognition), then these will also be affected. Continued receipt of such packets will lead to a sustained Denial of Service.

This issue affects: Juniper Networks Junos OS 21.4 versions prior to 21.4R3-S3; 22.1 versions prior to 22.1R3-S3; 22.2 versions prior to 22.2R2-S1, 22.2R3; 22.3 versions prior to 22.3R2.

Juniper Networks Junos OS Evolved 21.4-EVO versions prior to 21.4R3-S2-EVO; 22.1-EVO versions prior to 22.1R3-S3-EVO; 22.2-EVO versions prior to 22.2R2-S1-EVO, 22.2R3-EVO; 22.3-EVO versions prior to 22.3R2-EVO.

A Reachable Assertion vulnerability in Routing Protocol Daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows a locally-based, low-privileged attacker to cause a Denial of Service (DoS).

On all Junos OS and Junos OS Evolved, when a specific L2VPN command is run, RPD will crash and restart. Continued execution of this specific command will create a sustained Denial of Service (DoS) condition.

This issue affects: Juniper Networks Junos OS All versions prior to 19.3R3-S10; 20.1 versions prior to 20.1R3-S4; 20.2 versions prior to 20.2R3-S6; 20.3 versions prior to 20.3R3-S6; 20.4 versions prior to 20.4R3-S5; 21.1 versions prior to 21.1R3-S4; 21.2 versions prior to 21.2R3-S3; 21.3 versions prior to 21.3R3-S2; 21.4 versions prior to 21.4R3; 22.1 versions prior to 22.1R3; 22.2 versions prior to 22.2R2; 22.3 versions prior to 22.3R2;

Juniper Networks Junos OS Evolved All versions prior to 20.4R3-S7-EVO; 21.1 versions prior to 21.1R3-S3-EVO; 21.2 versions prior to 21.2R3-S5-EVO; 21.3 versions prior to 21.3R3-S4-EVO; 21.4 versions prior to 21.4R3-EVO; 22.1 versions prior to 22.1R3-EVO; 22.2 versions prior to 22.2R2-EVO; 22.3 versions prior to 22.3R2-EVO;

A Use of an Uninitialized Resource vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a local, authenticated attacker with low privileges to cause a Denial of Service (DoS).

On all Junos OS and Junos OS Evolved platforms, in a Multicast only Fast Reroute (MoFRR) scenario, the rpd process can crash when a a specific low privileged CLI command is executed. The rpd crash will impact all routing protocols until the process has automatically been restarted. As the operational state which makes this issue exploitable is outside the attackers control, this issue is considered difficult to exploit. Continued execution of this command will lead to a sustained DoS.

This issue affects: Juniper Networks Junos OS 19.4 version 19.4R3-S5 and later versions prior to 19.4R3-S9; 20.1 version 20.1R2 and later versions; 20.2 versions prior to 20.2R3-S7; 20.3 versions prior to 20.3R3-S5; 20.4 versions prior to 20.4R3-S6; 21.1 versions prior to 21.1R3-S4; 21.2 versions prior to 21.2R3-S2; 21.3 versions prior to 21.3R3-S1; 21.4 versions prior to 21.4R3; 22.1 versions prior to 22.1R1-S2, 22.1R2; 22.2 versions prior to 22.2R2.

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

A Use After Free vulnerability in the packet forwarding engine (PFE) of Juniper Networks Junos OS Evolved on PTX10001-36MR, and PTX10004, PTX10008, PTX10016 with LC1201/1202 allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).

The process 'aftman-bt' will crash after multiple flaps on a multicast-only fast reroute (MoFRR) enabled interface. This will cause the respective FPC to stop forwarding traffic and it needs to be rebooted to restore the service.

An indication that the system experienced this issue is the following log message:

<date> <hostname> evo-aftmand-bt[<pid>]: [Error] jexprfdb: sanity check failed, ... , appname L3 Mcast Routes

This issue affects Juniper Networks Junos OS Evolved on PTX10001-36MR, PTX10004, PTX10008, PTX10016 with LC1201/1202: 21.2 version 21.2R1-EVO and later versions; 21.3 version 21.3R1-EVO and later versions; 21.4 versions prior to 21.4R3-S3-EVO; 22.1 version 22.1R1-EVO and later versions; 22.2 versions prior to 22.2R3-S2-EVO; 22.3 versions prior to 22.3R3-EVO; 22.4 versions prior to 22.4R1-S2-EVO, 22.4R2-EVO.

A Missing Release of Memory after Effective Lifetime vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low privileged user to cause an impact to the availability of the device.

When RIB sharding is enabled and a user executes one of several routing related 'show' commands, a certain amount of memory is leaked. When all available memory has been consumed rpd will crash and restart.

The leak can be monitored with the CLI command:

show task memory detail | match taskshardmgmtcookie

where the allocated memory in bytes can be seen to continuously increase with each exploitation.

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-S7, 23.2 versions before 23.2R2-S4,  23.4 versions before 23.4R2-S4, 24.2 versions before 24.2R2, 24.4 versions before 24.4R1-S2, 24.4R2;

Junos OS Evolved:

all versions before 22.2R3-S7-EVO 22.4-EVO versions before 22.4R3-S7-EVO, 23.2-EVO versions before 23.2R2-S4-EVO, 23.4-EVO versions before 23.4R2-S4-EVO, 24.2-EVO versions before 24.2R2-EVO,  24.4-EVO versions before 24.4R2-EVO.

An Improper Check for Unusual or Exceptional Conditions vulnerability in routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, logically adjacent BGP peer to cause Denial of Service (DoS).

On all Junos OS and Junos OS Evolved platforms, when BGP rib-sharding and update-threading are configured, and a BGP peer flap is done with specific timing, rpd crashes and restarts. Continuous peer flapping at specific time intervals will result in a sustained Denial of Service (DoS) condition.

This issue affects eBGP and iBGP, in both IPv4 and IPv6 implementations. This issue requires a remote attacker to have at least one established BGP session. The issue can occur with or without logical-systems enabled.

This issue affects: Junos OS:

All versions before 20.4R3-S8, 21.2 versions before 21.2R3-S6,

21.3 versions before 21.3R3-S5, 21.4 versions before 21.4R3-S4, 22.1 versions before 22.1R3-S3, 22.2 versions before 22.2R3-S1, 22.3 versions before 22.3R3, 22.4 versions before 22.4R3.

Junos OS Evolved:

All versions before 21.2R3-S6-EVO, 21.3-EVO versions before 21.3R3-S5-EVO, 21.4-EVO versions before 21.4R3-S4-EVO, 22.1-EVO versions before 22.1R3-S3-EVO, 22.2-EVO versions before :22.2R3-S1-EVO, 22.3-EVO versions before 22.3R3-EVO, 22.4-EVO versions before 22.4R3-EVO.

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 an integrity impact to the downstream devices.

When a peer sends a BGP update message which contains the aggregator attribute with an ASN value of zero (0), rpd accepts and propagates this attribute, which can cause issues for downstream BGP peers receiving this.

This issue affects:

Junos OS:

All versions before 21.4R3-S6, 22.2 versions before 22.2R3-S3, 22.4 versions before 22.4R3;

Junos OS Evolved:

All versions before 21.4R3-S7-EVO, 22.2 versions before 22.2R3-S4-EVO, 22.4 versions before 22.4R3-EVO.

An Improper Handling of Exceptional Conditions vulnerability in the Packet Forwarding Engine (pfe) of the Juniper Networks Junos OS Evolved on ACX Series devices allows an unauthenticated, network based attacker sending specific transit protocol traffic to cause a partial Denial of Service (DoS) to downstream devices.

Receipt of specific transit protocol packets is incorrectly processed by the Routing Engine (RE), filling up the DDoS protection queue which is shared between routing protocols. This influx of transit protocol packets causes DDoS protection violations, resulting in protocol flaps which can affect connectivity to networking devices.

This issue affects both IPv4 and IPv6. This issue does not require any specific routing protocol to be configured or enabled.

The following commands can be used to monitor the DDoS protection queue:

labuser@re0> show evo-pfemand host pkt-stats

labuser@re0> show host-path ddos all-policers

This issue affects Junos OS Evolved:

All versions before 21.4R3-S8-EVO,  from 22.2 before 22.2R3-S4-EVO,  from 22.3 before 22.3R3-S4-EVO,  from 22.4 before 22.4R3-S3-EVO,  from 23.2 before 23.2R2-EVO,  from 23.4 before 23.4R1-S1-EVO, 23.4R2-EVO,  from 24.2 before 24.2R2-EVO.

A Reachable Assertion vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).On all Junos OS and Junos OS Evolved devices, when route validation is enabled, a rare condition during BGP initial session establishment can lead to an rpd crash and restart. This occurs specifically when the connection request fails during error-handling scenario.

Continued session establishment failures leads to a sustained DoS condition.

This issue affects Junos OS:

All versions 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 22.2R3-S6-EVO, 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 Check for Unusual or Exceptional Conditions vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged attacker to cause a Denial-of-Service (DoS).

When a specific "show bgp neighbor" CLI command is run, the rpd cpu utilization rises and eventually causes a crash and restart. Repeated use of this command will cause a sustained DoS condition.

The device is only affected if BGP RIB sharding and update-threading is enabled. This issue affects Junos OS:

All versions before 21.2R3-S9,  from 21.4 before 21.4R3-S8, from 22.2 before 22.2R3-S6,  from 22.4 before 22.4R3-S2,  from 23.2 before 23.2R2-S3,  from 23.4 before 23.4R2.

and Junos OS Evolved:

All versions before 21.2R3-S9-EVO,  from 21.4-EVO before 21.4R3-S8-EVO,  from 22.2-EVO before 22.2R3-S6-EVO,  from 22.4-EVO before 22.4R3-S2-EVO,  from 23.2-EVO before 23.2R2-S3-EVO,  from 23.4-EVO before 23.4R2-EVO.

An Exposure of Sensitive Information to an Unauthorized Actor vulnerability in the User Interface (UI) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged, authenticated attacker with access to the CLI to access sensitive information.

Through the execution of a specific show mgd command, a user with limited permissions (e.g., a low-privileged login class user) can access sensitive information such as hashed passwords, that can be used to further impact the system.

This issue affects Junos OS:  All versions before 21.4R3-S10, 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.

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-S5-EVO,  from 23.2-EVO before 23.2R2-S3-EVO,  from 23.4-EVO before 23.4R2-S3-EVO.

An Expired Pointer Dereference vulnerability in Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause Denial of Service (DoS).On all Junos OS and Junos OS Evolved platforms, when an MPLS Label-Switched Path (LSP) is configured with node-link-protection and transport-class, and an LSP flaps, rpd crashes and restarts. Continuous flapping of LSP can cause a sustained Denial of Service (DoS) condition.

This issue affects:

Junos OS:

All versions before 22.2R3-S4,

22.4 versions before 22.4R3-S2,

23.2 versions before 23.2R2,

23.4 versions before 23.4R2.

Junos OS Evolved:

All versions before 22.2R3-S4-EVO,

22.4-EVO versions before 22.4R3-S2-EVO,

23.2-EVO versions before 23.2R2-EVO,

23.4-EVO versions before 23.4R2-EVO.

An Improper Handling of Exceptional Conditions vulnerability in routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged attacker executing a CLI command to cause a Denial of Service (DoS).

When asregex-optimized is configured and a specific "show route as-path" CLI command is executed, the rpd crashes and restarts. Repeated execution of this command will cause a sustained DoS condition. 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.

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-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.

An Exposure of Resource to Wrong Sphere vulnerability in the sampling service of Juniper Networks Junos OS Evolved allows an unauthenticated network-based attacker to send arbitrary data to the device, which leads msvcsd process to crash with limited availability impacting Denial of Service (DoS) and allows unauthorized network access to the device, potentially impacting system integrity.

This issue only happens when inline jflow is configured.

This does not impact any forwarding traffic. The impacted services MSVCS-DB app crashes momentarily and recovers by itself.

This issue affects Juniper Networks Junos OS Evolved:  21.4 versions earlier than 21.4R3-S7-EVO;  22.2 versions earlier than 22.2R3-S3-EVO; 22.3 versions earlier than 22.3R3-S2-EVO; 22.4 versions earlier than 22.4R3-EVO; 23.2 versions earlier than 23.2R1-S2-EVO, 23.2R2-EVO.

An Incorrect Comparison vulnerability in the local address verification API of Juniper Networks Junos OS Evolved allows an unauthenticated network-adjacent attacker to create sessions or send traffic to the device using the network and broadcast address of the subnet assigned to an interface. This is unintended and unexpected behavior and can allow an attacker to bypass certain compensating controls, such as stateless firewall filters.

This issue affects Junos OS Evolved:

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

An Incorrect Default Permissions vulnerability in the command line interface (CLI) of Juniper Networks Junos OS Evolved allows a low privileged local attacker to view NETCONF traceoptions files, representing an exposure of sensitive information.

On all Junos OS Evolved platforms, when NETCONF traceoptions are configured, NETCONF traceoptions files get created with an incorrect group permission, which allows

a low-privileged user can access sensitive information compromising the confidentiality of the system.

Junos OS Evolved:

All versions before 20.4R3-S9-EVO,  21.2-EVO before 21.2R3-S7-EVO,  21.4-EVO before 21.4R3-S5-EVO,  22.1-EVO before 22.1R3-S5-EVO,  22.2-EVO before 22.2R3-S3-EVO,  22.3-EVO before 22.3R3-EVO, 22.3R3-S2-EVO,  22.4-EVO before 22.4R3-EVO,  23.2-EVO before 23.2R1-S2-EVO, 23.2R2-EVO.

An Insertion of Sensitive Information into Log File vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows a local, authenticated attacker with high privileges to access sensitive information.

When another user performs a specific operation, sensitive information is stored as plain text in a specific log file, so that a high-privileged attacker has access to this information. This issue affects:

Junos OS:

All versions before 21.2R3-S9;

21.4 versions before 21.4R3-S9;

22.2 versions before 22.2R2-S1, 22.2R3; 22.3 versions before 22.3R1-S1, 22.3R2;

Junos OS Evolved:

All versions before before 22.1R3-EVO; 22.2-EVO versions before 22.2R2-S1-EVO, 22.2R3-EVO; 22.3-EVO versions before 22.3R1-S1-EVO, 22.3R2-EVO.

A Missing Release of Memory after Effective Lifetime vulnerability in the Periodic Packet Management Daemon (ppmd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause a

Denial-of-Service (DoS).

When a BFD session configured with authentication flaps, ppmd memory can leak. Whether the leak happens depends on a race condition which is outside the attackers control. This issue only affects BFD operating in distributed aka delegated (which is the default behavior) or inline mode.

Whether the leak occurs can be monitored with the following CLI command:

show ppm request-queue

FPC     Pending-request fpc0                   2 request-total-pending: 2

where a continuously increasing number of pending requests is indicative of the leak.

This issue affects:

Junos OS:

All versions before 21.2R3-S8, 21.4 versions before 21.4R3-S7, 22.1 versions before 22.1R3-S4, 22.2 versions before 22.2R3-S4, 22.3 versions before 22.3R3, 22.4 versions before 22.4R2-S2, 22.4R3.

Junos OS Evolved: All versions before 21.2R3-S8-EVO, 21.4-EVO versions before 21.4R3-S7-EVO, 22.2-EVO versions before 22.2R3-S4-EVO, 22.3-EVO versions before 22.3R3-EVO, 22.4-EVO versions before 22.4R3-EVO.

An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in Juniper Networks Junos OS Evolved on ACX 7000 Series allows an unauthenticated, network-based attacker to cause a limited information disclosure and availability impact to the device.

Due to a wrong initialization, specific processes which should only be able to communicate internally within the device can be reached over the network via open ports.

This issue affects Junos OS Evolved on ACX 7000 Series:

All versions before 21.4R3-S7-EVO, 22.2-EVO

versions

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