CVE-2024-21604: Junos OS Evolved: A high rate of specific traffic will cause a complete system outage
First published: Fri Jan 12 2024(Updated: )
An Allocation of Resources Without Limits or Throttling vulnerability in the kernel of Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS). If a high rate of specific valid packets are processed by the routing engine (RE) this will lead to a loss of connectivity of the RE with other components of the chassis and thereby a complete and persistent system outage. Please note that a carefully designed lo0 firewall filter will block or limit these packets which should prevent this issue from occurring. The following log messages can be seen when this issue occurs: <host> kernel: nf_conntrack: nf_conntrack: table full, dropping packet This issue affects Juniper Networks Junos OS Evolved: * All versions earlier than 20.4R3-S7-EVO; * 21.2R1-EVO and later versions; * 21.4-EVO versions earlier than 21.4R3-S5-EVO; * 22.1-EVO versions earlier than 22.1R3-S2-EVO; * 22.2-EVO versions earlier than 22.2R3-EVO; * 22.3-EVO versions earlier than 22.3R2-EVO; * 22.4-EVO versions earlier than 22.4R2-EVO.
Credit: sirt@juniper.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Juniper Networks Junos OS Evolved | =21.2-r1-s1 | |
| Juniper Networks Junos OS Evolved | =21.2-r1-s2 | |
| Juniper Networks Junos OS Evolved | =21.2-r2 | |
| Juniper Networks Junos OS Evolved | =21.2-r2-s1 | |
| Juniper Networks Junos OS Evolved | =21.2-r2-s2 | |
| Juniper Networks Junos OS Evolved | =21.2-r3 | |
| Juniper Networks Junos OS Evolved | =21.2-r3-s1 | |
| Juniper Networks Junos OS Evolved | =21.2-r3-s2 | |
| Juniper Networks Junos OS Evolved | =21.2-r3-s3 | |
| Juniper Networks Junos OS Evolved | =21.2-r3-s4 | |
| Juniper Networks Junos OS Evolved | =21.2-r3-s5 | |
| Juniper Networks Junos OS Evolved | =21.2-r3-s6 | |
| Juniper Networks Junos OS Evolved | =21.4 | |
| Juniper Networks Junos OS Evolved | =21.4-r1 | |
| Juniper Networks Junos OS Evolved | =21.4-r1-s1 | |
| Juniper Networks Junos OS Evolved | =21.4-r1-s2 | |
| Juniper Networks Junos OS Evolved | =21.4-r2 | |
| Juniper Networks Junos OS Evolved | =21.4-r2-s1 | |
| Juniper Networks Junos OS Evolved | =21.4-r2-s2 | |
| Juniper Networks Junos OS Evolved | =21.4-r3 | |
| Juniper Networks Junos OS Evolved | =21.4-r3-s1 | |
| Juniper Networks Junos OS Evolved | =21.4-r3-s2 | |
| Juniper Networks Junos OS Evolved | =21.4-r3-s3 | |
| Juniper Networks Junos OS Evolved | =21.4-r3-s4 | |
| Juniper Networks Junos OS Evolved | =22.1 | |
| Juniper Networks Junos OS Evolved | =22.1-r1 | |
| Juniper Networks Junos OS Evolved | =22.1-r1-s1 | |
| Juniper Networks Junos OS Evolved | =22.1-r1-s2 | |
| Juniper Networks Junos OS Evolved | =22.1-r2 | |
| Juniper Networks Junos OS Evolved | =22.1-r2-s1 | |
| Juniper Networks Junos OS Evolved | =22.1-r3 | |
| Juniper Networks Junos OS Evolved | =22.1-r3-s1 | |
| Juniper Networks Junos OS Evolved | =22.2 | |
| Juniper Networks Junos OS Evolved | =22.2-r1 | |
| Juniper Networks Junos OS Evolved | =22.2-r1-s1 | |
| Juniper Networks Junos OS Evolved | =22.2-r2 | |
| Juniper Networks Junos OS Evolved | =22.2-r2-s1 | |
| Juniper Networks Junos OS Evolved | =22.2-r2-s2 | |
| Juniper Networks Junos OS Evolved | =22.3 | |
| Juniper Networks Junos OS Evolved | =22.3-r1 | |
| Juniper Networks Junos OS Evolved | =22.3-r1-s1 | |
| Juniper Networks Junos OS Evolved | =22.3-r1-s2 | |
| Juniper Networks Junos OS Evolved | =22.4 | |
| Juniper Networks Junos OS Evolved | =22.4-r1 | |
| Juniper Networks Junos OS Evolved | =22.4-r1-s1 | |
| Juniper Networks Junos OS Evolved | =22.4-r1-s2 |
Remedy
The following software releases have been updated to resolve this specific issue: Junos OS Evolved 20.4R3-S7-EVO, 21.4R3-S5-EVO, 22.1R3-S2-EVO, 22.2R3-EVO, 22.3R2-EVO, 22.4R2-EVO, 23.2R1-EVO, and all subsequent releases.
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of CVE-2024-21604?
CVE-2024-21604 has a severity rating that indicates a high risk of Denial of Service attacks if exploited.
How do I fix CVE-2024-21604?
To fix CVE-2024-21604, it is recommended to apply the latest security patches provided by Juniper Networks for affected versions of Junos OS Evolved.
Which versions of Junos OS Evolved are affected by CVE-2024-21604?
CVE-2024-21604 affects multiple versions of Junos OS Evolved, including 21.2, 21.4, 22.1, 22.2, 22.3, and 22.4.
Who can exploit CVE-2024-21604?
CVE-2024-21604 can be exploited by unauthenticated, network-based attackers.
What type of vulnerability is CVE-2024-21604?
CVE-2024-21604 is classified as an Allocation of Resources Without Limits or Throttling vulnerability.
- collector/mitre-cve
- source/MITRE
- agent/remedy
- agent/weakness
- agent/severity
- agent/references
- agent/title
- agent/author
- agent/type
- agent/first-publish-date
- agent/description
- agent/last-modified-date
- agent/event
- collector/epss-latest
- source/FIRST
- agent/epss
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- agent/softwarecombine
- agent/tags
- agent/source
- vendor/juniper
- canonical/juniper networks junos os evolved
- version/juniper networks junos os evolved/21.2-r1-s1
- version/juniper networks junos os evolved/21.2-r1-s2
- version/juniper networks junos os evolved/21.2-r2
- version/juniper networks junos os evolved/21.2-r2-s1
- version/juniper networks junos os evolved/21.2-r2-s2
- version/juniper networks junos os evolved/21.2-r3
- version/juniper networks junos os evolved/21.2-r3-s1
- version/juniper networks junos os evolved/21.2-r3-s2
- version/juniper networks junos os evolved/21.2-r3-s3
- version/juniper networks junos os evolved/21.2-r3-s4
- version/juniper networks junos os evolved/21.2-r3-s5
- version/juniper networks junos os evolved/21.2-r3-s6
- version/juniper networks junos os evolved/21.4
- version/juniper networks junos os evolved/21.4-r1
- version/juniper networks junos os evolved/21.4-r1-s1
- version/juniper networks junos os evolved/21.4-r1-s2
- version/juniper networks junos os evolved/21.4-r2
- version/juniper networks junos os evolved/21.4-r2-s1
- version/juniper networks junos os evolved/21.4-r2-s2
- version/juniper networks junos os evolved/21.4-r3
- version/juniper networks junos os evolved/21.4-r3-s1
- version/juniper networks junos os evolved/21.4-r3-s2
- version/juniper networks junos os evolved/21.4-r3-s3
- version/juniper networks junos os evolved/21.4-r3-s4
- version/juniper networks junos os evolved/22.1
- version/juniper networks junos os evolved/22.1-r1
- version/juniper networks junos os evolved/22.1-r1-s1
- version/juniper networks junos os evolved/22.1-r1-s2
- version/juniper networks junos os evolved/22.1-r2
- version/juniper networks junos os evolved/22.1-r2-s1
- version/juniper networks junos os evolved/22.1-r3
- version/juniper networks junos os evolved/22.1-r3-s1
- version/juniper networks junos os evolved/22.2
- version/juniper networks junos os evolved/22.2-r1
- version/juniper networks junos os evolved/22.2-r1-s1
- version/juniper networks junos os evolved/22.2-r2
- version/juniper networks junos os evolved/22.2-r2-s1
- version/juniper networks junos os evolved/22.2-r2-s2
- version/juniper networks junos os evolved/22.3
- version/juniper networks junos os evolved/22.3-r1
- version/juniper networks junos os evolved/22.3-r1-s1
- version/juniper networks junos os evolved/22.3-r1-s2
- version/juniper networks junos os evolved/22.4
- version/juniper networks junos os evolved/22.4-r1
- version/juniper networks junos os evolved/22.4-r1-s1
- version/juniper networks junos os evolved/22.4-r1-s2