Access of uninitialized pointer in Junos OS - CVE-2022-22236
Published: October 12, 2022
Vulnerability identifier: #VU82503
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-2022-22236
CWE-ID: CWE-824
Exploitation vector: Remote access
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 access of uninitialized pointer error in SIP Application Layer Gateway (ALG). A remote non-authenticated attacker can cause a Denial of Service (DoS).
When specific valid SIP packets are received the PFE will crash and restart.
Affected software
Junos OS
How to mitigate CVE-2022-22236
Install updates from vendor's website.
Junos OS - addressed in versions 20.4R3-S4, 21.1R3-S2, 21.2R3-S2, 21.3R2-S2, 21.3R3, 21.4R1-S2, 21.4R2, 21.4R3, 22.1R1-S1, 22.1R2, 22.2R1