| Name | CVE-2023-52426 |
| Description | libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD is undefined at compile time. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1063240 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| expat (PTS) | buster | 2.2.6-2+deb10u4 | vulnerable |
| buster (security) | 2.2.6-2+deb10u7 | vulnerable |
| bullseye (security), bullseye | 2.2.10-2+deb11u5 | vulnerable |
| bookworm | 2.5.0-1 | vulnerable |
| sid, trixie | 2.6.2-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| expat | source | (unstable) | 2.6.0-1 | unimportant | | 1063240 |
Notes
https://github.com/libexpat/libexpat/pull/777
https://github.com/libexpat/libexpat/commit/0f075ec8ecb5e43f8fdca5182f8cca4703da0404
https://github.com/libexpat/libexpat/pull/777#issuecomment-1965172301
CVE is for fixing billion laughs attacks for users compiling *without* XML_DTD defined,
which is not the case for Debian.