| Name | CVE-2023-43786 |
| Description | A vulnerability was found in libX11 due to an infinite loop within the PutSubImage() function. This flaw allows a local user to consume all available system resources and cause a denial of service condition. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-3602-1, DSA-5517-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| libx11 (PTS) | buster | 2:1.6.7-1+deb10u2 | vulnerable |
| buster (security) | 2:1.6.7-1+deb10u4 | fixed | |
| bullseye (security), bullseye | 2:1.7.2-1+deb11u2 | fixed | |
| bookworm, bookworm (security) | 2:1.8.4-2+deb12u2 | fixed | |
| sid, trixie | 2:1.8.7-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| libx11 | source | buster | 2:1.6.7-1+deb10u4 | DLA-3602-1 | ||
| libx11 | source | bullseye | 2:1.7.2-1+deb11u2 | DSA-5517-1 | ||
| libx11 | source | bookworm | 2:1.8.4-2+deb12u2 | DSA-5517-1 | ||
| libx11 | source | (unstable) | 2:1.8.7-1 |
https://www.openwall.com/lists/oss-security/2023/10/03/1
Fixed by: https://gitlab.freedesktop.org/xorg/lib/libx11/-/commit/204c3393c4c90a29ed6bef64e43849536e863a86
Hardening: https://gitlab.freedesktop.org/xorg/lib/libx11/-/commit/73a37d5f2fcadd6540159b432a70d80f442ddf4a
Hardening: https://gitlab.freedesktop.org/xorg/lib/libx11/-/commit/b4031fc023816aca07fbd592ed97010b9b48784b
Hardening: https://gitlab.freedesktop.org/xorg/lib/libxpm/-/commit/84fb14574c039f19ad7face87eb9acc31a50701c
https://jfrog.com/blog/xorg-libx11-vulns-cve-2023-43786-cve-2023-43787-part-one/
https://jfrog.com/blog/xorg-libx11-vulns-cve-2023-43786-cve-2023-43787-part-two/