CVE-2022-24793

NameCVE-2022-24793
DescriptionPJSIP 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-3036-1, DLA-3194-1, DLA-3549-1, DSA-5285-1
Debian Bugs1014976, 1014998

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
asterisk (PTS)buster1:16.2.1~dfsg-1+deb10u2vulnerable
buster (security)1:16.28.0~dfsg-0+deb10u4fixed
bullseye1:16.28.0~dfsg-0+deb11u3fixed
bullseye (security)1:16.28.0~dfsg-0+deb11u4fixed
sid1:20.8.1~dfsg+~cs6.14.40431414-1fixed
ring (PTS)buster20190215.1.f152c98~ds1-1+deb10u1vulnerable
buster (security)20190215.1.f152c98~ds1-1+deb10u2fixed
bullseye20210112.2.b757bac~ds1-1vulnerable
bookworm20230206.0~ds2-1.1fixed
sid, trixie20231201.0~ds1-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
asterisksourcestretch(not affected)
asterisksourcebuster1:16.28.0~dfsg-0+deb10u1DLA-3194-1
asterisksourcebullseye1:16.28.0~dfsg-0+deb11u1DSA-5285-1
asterisksource(unstable)1:18.14.0~~rc1~dfsg+~cs6.12.40431414-11014976
pjprojectsourcestretch2.5.5~dfsg-6+deb9u5DLA-3036-1
pjprojectsource(unstable)(unfixed)
ringsourcebuster20190215.1.f152c98~ds1-1+deb10u2DLA-3549-1
ringsource(unstable)20230206.0~ds1-11014998

Notes

[stretch] - asterisk <not-affected> (Vulnerable code not present)
[bookworm] - ring <no-dsa> (Minor issue)
https://github.com/pjsip/pjproject/security/advisories/GHSA-p6g5-v97c-w5q4
https://github.com/pjsip/pjproject/commit/9fae8f43accef8ea65d4a8ae9cdf297c46cfe29a

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