| Name | CVE-2023-29469 |
| Description | An issue was discovered in libxml2 before 2.10.4. When hashing empty dict strings in a crafted XML document, xmlDictComputeFastKey in dict.c can produce non-deterministic values, leading to various logic and memory errors, such as a double free. This behavior occurs because there is an attempt to use the first byte of an empty string, and any value is possible (not solely the '\0' value). |
| 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-3405-1, DSA-5391-1, ELA-837-1 |
| Debian Bugs | 1034437 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| libxml2 (PTS) | jessie, jessie (lts) | 2.9.1+dfsg1-5+deb8u17 | fixed |
| stretch (security) | 2.9.4+dfsg1-2.2+deb9u7 | vulnerable | |
| stretch (lts), stretch | 2.9.4+dfsg1-2.2+deb9u11 | fixed | |
| buster, buster (lts) | 2.9.4+dfsg1-7+deb10u9 | fixed | |
| buster (security) | 2.9.4+dfsg1-7+deb10u6 | fixed | |
| bullseye | 2.9.10+dfsg-6.7+deb11u4 | fixed | |
| bullseye (security) | 2.9.10+dfsg-6.7+deb11u5 | fixed | |
| bookworm | 2.9.14+dfsg-1.3~deb12u1 | fixed | |
| sid, trixie | 2.12.7+dfsg+really2.9.14-0.2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| libxml2 | source | jessie | 2.9.1+dfsg1-5+deb8u15 | ELA-837-1 | ||
| libxml2 | source | stretch | 2.9.4+dfsg1-2.2+deb9u10 | ELA-837-1 | ||
| libxml2 | source | buster | 2.9.4+dfsg1-7+deb10u6 | DLA-3405-1 | ||
| libxml2 | source | bullseye | 2.9.10+dfsg-6.7+deb11u4 | DSA-5391-1 | ||
| libxml2 | source | (unstable) | 2.9.14+dfsg-1.2 | 1034437 |
https://bugzilla.redhat.com/show_bug.cgi?id=2185984
https://gitlab.gnome.org/GNOME/libxml2/-/issues/510
Fixed by: https://gitlab.gnome.org/GNOME/libxml2/-/commit/09a2dd453007f9c7205274623acdd73747c22d64 (v2.10.4)