Improper handling of exceptional conditions in Junos OS and Junos OS Evolved - CVE-2022-22238
Published: October 17, 2022
Vulnerability identifier: #VU68361
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-22238
CWE-ID: CWE-755
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper handling of errors in the routing protocol daemon (rpd) when processing incoming RESV message corresponding to a protected LSP. A remote attacker can send specially crafted RESV messages to the affected device and perform a denial of service (DoS) attack.
Affected software
Junos OS
Junos OS Evolved
Junos OS Evolved
How to mitigate CVE-2022-22238
Install updates from vendor's website.
Junos OS - addressed in versions 19.4R3-S8, 20.1R3-S2, 20.2R3-S3, 20.3R3-S2, 20.4R3-S1, 21.1R3, 21.2R1-S2, 21.2R3, 21.3R2, 21.4R1
Junos OS Evolved - addressed in versions 20.2R3-S3-EVO, 20.4R3-S1-EVO, 21.3R2-EVO, 21.4R1-EVO
Junos OS Evolved - addressed in versions 20.2R3-S3-EVO, 20.4R3-S1-EVO, 21.3R2-EVO, 21.4R1-EVO