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Vulnerability · Published Mar 14, 2023 · Assigned by GitHub_M

CVE-2023-27585

High 7.5

In plain English

A high-severity heap buffer overflow in pjproject from pjsip. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.3% (higher than 83% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)2.3%top 16.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.20pjproject2.13.1-r0ALPINE-CVE-2023-27585
Alpine:v3.21pjproject2.13.1-r0ALPINE-CVE-2023-27585
Alpine:v3.22pjproject2.13.1-r0ALPINE-CVE-2023-27585
Alpine:v3.23pjproject2.13.1-r0ALPINE-CVE-2023-27585
Alpine:v3.24pjproject2.13.1-r0ALPINE-CVE-2023-27585
Debian:14asterisk1:20.4.0~dfsg+~cs6.13.40431414-1DEBIAN-CVE-2023-27585
Debian:12ring20230206.0~ds2-1.1+deb12u1DEBIAN-CVE-2023-27585
Debian:12ring20230206.0~ds2-1.1+deb12u1DSA-5956-1

Affected products (as reported)

VendorProductVersions
pjsip pjproject <= 2.13

Weakness: CWE-122, CWE-120 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References