Improper control of a resource through its lifetime in Junos OS and Junos OS Evolved - CVE-2022-22250
Published: October 12, 2022
Vulnerability identifier: #VU82505
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-22250
CWE-ID: CWE-664
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper control of a resource through its lifetime error in Packet Forwarding Engine (PFE). A remote non-authenticated attacker can cause a Denial of Service (DoS).
In an EVPN-MPLS scenario, if MAC is learned locally on access interface but later a request to delete is received indicating that the MAC was learnt remotely, it might lead to memory corruption which might result in line card crash and reload.
Affected software
Junos OS
Junos OS Evolved
Junos OS Evolved
How to mitigate CVE-2022-22250
Install updates from vendor's website.
Junos OS - addressed in versions 19.2R3-S5, 19.3R3-S5, 19.4R2-S6, 19.4R3-S8, 20.2R3-S4, 20.3R3-S3, 20.4R3-S3, 21.1R3-S1, 21.2R3, 21.3R2, 21.4R1-S1, 21.4R2, 22.1R1
Junos OS Evolved - addressed in versions 20.4R3-S3-EVO, 21.2R3-EVO, 21.3R2-EVO, 21.4R1-S1-EVO, 21.4R2-EVO, 22.1R1-EVO
Junos OS Evolved - addressed in versions 20.4R3-S3-EVO, 21.2R3-EVO, 21.3R2-EVO, 21.4R1-S1-EVO, 21.4R2-EVO, 22.1R1-EVO