CVE-2023-27585

7.5 HIGH
Published: March 14, 2023 Modified: November 04, 2025

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/pjsip/pjproject/security/advisories/GHSA-p6g5-v97c-w5q4
Source: security-advisories@github.com
Vendor Advisory
https://github.com/pjsip/pjproject/security/advisories/GHSA-q9cp-8wcq-7pfr
Source: security-advisories@github.com
Patch Vendor Advisory
https://www.debian.org/security/2023/dsa-5438
Source: security-advisories@github.com
https://github.com/pjsip/pjproject/security/advisories/GHSA-p6g5-v97c-w5q4
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://github.com/pjsip/pjproject/security/advisories/GHSA-q9cp-8wcq-7pfr
Source: af854a3a-2127-422b-91ae-364da2661108
Patch Vendor Advisory
https://www.debian.org/security/2023/dsa-5438
Source: af854a3a-2127-422b-91ae-364da2661108
https://www.pjsip.org/pjlib-util/docs/html/group__PJ__DNS__RESOLVER.htm
Source: af854a3a-2127-422b-91ae-364da2661108
Product

15 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
0.4%
61th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

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