CVE-2022-24793

Name: CVE-2022-24793
Creator: NVD / NIST
Published: 2022-04-06T14:15:08.087+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.11%

Last modified Jun 17, 2026

CVE-2022-24793 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 2.11% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

2.11%

79.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Pjsip	Pjsip	<= 2.12
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Debian	Debian Linux	11.0

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

Timeline

Published: Apr 6, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-24793?

How severe is CVE-2022-24793?

CVE-2022-24793 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.11% probability of exploitation in the next 30 days.

How do I fix CVE-2022-24793?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-24793?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST