Use After Free in Asterisk Certified
CVE-2022-23608
PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In versions up to and including 2.11.1 when in a dialog set (or forking) scenario, a hash key shared by multiple UAC dialogs can potentially be prematurely freed when one of the dialogs is destroyed . The issue may cause a dialog set to be registered in the hash table multiple times (with different hash keys) leading to undefined behavior such as dialog list collision which eventually leading to endless loop. A patch is available in commit db3235953baa56d2fb0e276ca510fefca751643f which will be included in the next release. There are no known workarounds for this issue.
Vulnerability class: Use-After-Free
EPSS: 0.041 (90.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Asterisk Certified_asterisk — versions 16.8.0
- Pjsip Pjproject — versions <= 2.11.1
- Sangoma Asterisk
- Teluu Pjsip
- Debian Debian_linux — versions 9.0, 10.0
Weakness classification (CWE)
References
- security-advisories@github.com (Patch, Third Party Advisory, Issue Tracking)
- security-advisories@github.com (Patch, Third Party Advisory)
- security-advisories@github.com (mailing-list, Patch, Mailing List, Third Party Advisory)
- security-advisories@github.com (VDB Entry, Third Party Advisory)
- security-advisories@github.com (mailing-list, Mailing List, Third Party Advisory)
- security-advisories@github.com (mailing-list, Mailing List, Third Party Advisory)
- security-advisories@github.com (vendor-advisory, Third Party Advisory)
- security-advisories@github.com (mailing-list, Mailing List, Third Party Advisory)
- security-advisories@github.com (vendor-advisory, Third Party Advisory)
- security-advisories@github.com (mailing-list)
Frequently asked questions
- What is CVE-2022-23608?
- CVE-2022-23608 is a high-severity vulnerability in Asterisk Certified, classified under Use After Free. CVSS score: 8.1/10. Published 2022-02-22.
- How severe is CVE-2022-23608?
- High severity. CVSS v3 base score is 8.1 out of 10.