CVE-2023-22402: Junos OS Evolved: The kernel might restart in a BGP scenario where "bgp auto-discovery" is enabled and such a neighbor flaps
First published: Thu Jan 12 2023(Updated: )
A Use After Free vulnerability in the kernel of Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS). In a Non Stop Routing (NSR) scenario, an unexpected kernel restart might be observed if "bgp auto-discovery" is enabled and if there is a BGP neighbor flap of auto-discovery sessions for any reason. This is a race condition which is outside of an attackers direct control and it depends on system internal timing whether this issue occurs. This issue affects Juniper Networks Junos OS Evolved: 21.3 versions prior to 21.3R3-EVO; 21.4 versions prior to 21.4R2-EVO; 22.1 versions prior to 22.1R2-EVO; 22.2 versions prior to 22.2R1-S1-EVO, 22.2R2-EVO.
Credit: sirt@juniper.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Juniper Junos Os Evolved | =21.3 | |
| Juniper Junos Os Evolved | =21.3-r1 | |
| Juniper Junos Os Evolved | =21.3-r1-s1 | |
| Juniper Junos Os Evolved | =21.3-r2 | |
| Juniper Junos Os Evolved | =21.3-r2-s1 | |
| Juniper Junos Os Evolved | =21.3-r2-s2 | |
| Juniper Junos Os Evolved | =21.4 | |
| Juniper Junos Os Evolved | =21.4-r1 | |
| Juniper Junos Os Evolved | =21.4-r1-s1 | |
| Juniper Junos Os Evolved | =21.4-r1-s2 | |
| Juniper Junos Os Evolved | =22.1-r1 | |
| Juniper Junos Os Evolved | =22.1-r1-s1 | |
| Juniper Junos Os Evolved | =22.1-r1-s2 | |
| Juniper Junos Os Evolved | =22.2-r1 |
Remedy
The following software releases have been updated to resolve this specific issue: 21.3R3-EVO, 21.4R2-EVO, 22.1R2-EVO, 22.2R1-S1-EVO, 22.2R2-EVO, 22.3R1-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 vulnerability ID for this Juniper Networks Junos OS Evolved vulnerability?
The vulnerability ID is CVE-2023-22402.
What is the severity of CVE-2023-22402?
The severity of CVE-2023-22402 is medium with a severity value of 5.9.
How does CVE-2023-22402 affect Juniper Junos OS Evolved?
CVE-2023-22402 allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS) in Juniper Junos OS Evolved.
Is there a fix available for CVE-2023-22402?
Yes, a fix is available for CVE-2023-22402. Please refer to the Juniper Networks advisory for more information.
Where can I find more information about CVE-2023-22402?
More information about CVE-2023-22402 can be found in the Juniper Networks knowledge base article: https://kb.juniper.net/JSA70198
- collector/nvd-index
- agent/weakness
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/references
- agent/severity
- agent/last-modified-date
- agent/author
- agent/tags
- agent/description
- agent/title
- agent/remedy
- agent/event
- agent/first-publish-date
- vendor/juniper
- canonical/juniper junos os evolved
- version/juniper junos os evolved/21.3
- version/juniper junos os evolved/21.3-r1
- version/juniper junos os evolved/21.3-r1-s1
- version/juniper junos os evolved/21.3-r2
- version/juniper junos os evolved/21.3-r2-s1
- version/juniper junos os evolved/21.3-r2-s2
- version/juniper junos os evolved/21.4
- version/juniper junos os evolved/21.4-r1
- version/juniper junos os evolved/21.4-r1-s1
- version/juniper junos os evolved/21.4-r1-s2
- version/juniper junos os evolved/22.1-r1
- version/juniper junos os evolved/22.1-r1-s1
- version/juniper junos os evolved/22.1-r1-s2
- version/juniper junos os evolved/22.2-r1