CVE-2022-24793
A buffer overflow vulnerability in versions 2.12 and prior affects applications that use PJSIP DNS resolution.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.18%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
PJSIP is a free and open source multimedia communication library written in C. A buffer overflow vulnerability in versions 2.12 and prior affects applications that use PJSIP DNS resolution. It doesn't affect PJSIP users who utilize an external resolver. This vulnerability is related to CVE-2023-27585. The difference is that this issue is in parsing the query record `parse_rr()`, while the issue in CVE-2023-27585 is in `parse_query()`. A patch is available in the `master` branch of the `pjsip/pjproject` GitHub repository. A workaround is to disable DNS resolution in PJSIP config (by setting `nameserver_count` to zero) or use an external resolver instead.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.18% probability · 81th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-120
- Affected
- pjsip/pjsip · debian/debian linux
- Source
- security-advisories@github.com
References
- https://github.com/pjsip/pjproject/commit/9fae8f43accef8ea65d4a8ae9cdf297c46cfe29aPatch, Third Party Advisory
- https://github.com/pjsip/pjproject/security/advisories/GHSA-p6g5-v97c-w5q4Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/05/msg00047.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00021.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html
- https://security.gentoo.org/glsa/202210-37Third Party Advisory
- https://www.debian.org/security/2022/dsa-5285Third Party Advisory
- https://github.com/pjsip/pjproject/commit/9fae8f43accef8ea65d4a8ae9cdf297c46cfe29aPatch, Third Party Advisory
- https://github.com/pjsip/pjproject/security/advisories/GHSA-p6g5-v97c-w5q4Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/05/msg00047.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00021.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html
- https://lists.debian.org/debian-lts-announce/2024/09/msg00030.html
- https://security.gentoo.org/glsa/202210-37Third Party Advisory
- https://www.debian.org/security/2022/dsa-5285Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.