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CVE-2023-27585

7.5 · HIGH

PJSIP is a free and open source multimedia communication library written in C.

Published Mar 14, 2023CWE-120EPSS 2.31%

Overview

CVE-2023-27585 is a high-severity vulnerability. It was published on March 14, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/pjsip/pjproject/commit/d1c5e4da5bae7f220bc30719888bb389c905c0c5GitHubgithub.com/pjsip/pjproject/security/advisories/GHSA-p6g5-v97c-w5q4GitHubgithub.com/pjsip/pjproject/security/advisories/GHSA-q9cp-8wcq-7pfrReflists.debian.org/debian-lts-announce/2023/04/msg00020.htmlReflists.debian.org/debian-lts-announce/2023/08/msg00038.htmlRefwww.debian.org/security/2023/dsa-5438Refwww.pjsip.org/pjlib-util/docs/html/group__PJ__DNS__RESOLVER.htmGitHubgithub.com/pjsip/pjproject/commit/d1c5e4da5bae7f220bc30719888bb389c905c0c5GitHubgithub.com/pjsip/pjproject/security/advisories/GHSA-p6g5-v97c-w5q4GitHubgithub.com/pjsip/pjproject/security/advisories/GHSA-q9cp-8wcq-7pfr

How CyberStrike helps

Frequently asked questions

What is CVE-2023-27585?

CVE-2023-27585 is a high-severity vulnerability. It was published on March 14, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2023-27585?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-27585?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-27585?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-27585 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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