Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Teluu | Pjsip | < 2.13 |
Related Weaknesses (CWE)
References
- https://github.com/pjsip/pjproject/commit/d1c5e4da5bae7f220bc30719888bb389c905c0Patch
- https://github.com/pjsip/pjproject/security/advisories/GHSA-p6g5-v97c-w5q4Vendor Advisory
- https://github.com/pjsip/pjproject/security/advisories/GHSA-q9cp-8wcq-7pfrPatchVendor 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/d1c5e4da5bae7f220bc30719888bb389c905c0Patch
- https://github.com/pjsip/pjproject/security/advisories/GHSA-p6g5-v97c-w5q4Vendor Advisory
- https://github.com/pjsip/pjproject/security/advisories/GHSA-q9cp-8wcq-7pfrPatchVendor 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
FAQ
What is CVE-2023-27585?
CVE-2023-27585 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 a...
How severe is CVE-2023-27585?
CVE-2023-27585 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-27585?
Check the references section above for vendor advisories and patch information. Affected products include: Teluu Pjsip.