CVE-2023-27585
A buffer overflow vulnerability in versions 2.13 and prior affects applications that use PJSIP DNS resolver.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.31%). 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 2.13 and prior affects applications that use PJSIP DNS resolver. It doesn't affect PJSIP users who do not utilise PJSIP DNS resolver. This vulnerability is related to CVE-2022-24793. The difference is that this issue is in parsing the query record `parse_query()`, while the issue in CVE-2022-24793 is in `parse_rr()`. A patch is available as commit `d1c5e4d` in the `master` branch. A workaround is to disable DNS resolution in PJSIP config (by setting `nameserver_count` to zero) or use an external resolver implementation 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
- 2.31% probability · 82th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-120, CWE-122
- Affected
- teluu/pjsip
- Source
- security-advisories@github.com
References
- https://github.com/pjsip/pjproject/commit/d1c5e4da5bae7f220bc30719888bb389c905c0c5Patch
- https://github.com/pjsip/pjproject/security/advisories/GHSA-p6g5-v97c-w5q4Vendor Advisory
- https://github.com/pjsip/pjproject/security/advisories/GHSA-q9cp-8wcq-7pfrPatch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2023/04/msg00020.html
- https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html
- https://www.debian.org/security/2023/dsa-5438
- https://www.pjsip.org/pjlib-util/docs/html/group__PJ__DNS__RESOLVER.htmProduct
- https://github.com/pjsip/pjproject/commit/d1c5e4da5bae7f220bc30719888bb389c905c0c5Patch
- https://github.com/pjsip/pjproject/security/advisories/GHSA-p6g5-v97c-w5q4Vendor Advisory
- https://github.com/pjsip/pjproject/security/advisories/GHSA-q9cp-8wcq-7pfrPatch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2023/04/msg00020.html
- https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html
- https://lists.debian.org/debian-lts-announce/2024/09/msg00030.html
- https://www.debian.org/security/2023/dsa-5438
- https://www.pjsip.org/pjlib-util/docs/html/group__PJ__DNS__RESOLVER.htmProduct
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.