| 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) | jessie, jessie (lts) | 2.1.0-6+deb8u12 | vulnerable |
| stretch (security) | 2.2.0-2+deb9u5 | vulnerable |
| stretch (lts), stretch | 2.2.0-2+deb9u9 | vulnerable |
| buster, buster (lts) | 2.2.6-2+deb10u8 | vulnerable |
| buster (security) | 2.2.6-2+deb10u7 | vulnerable |
| bullseye | 2.2.10-2+deb11u5 | vulnerable |
| bullseye (security) | 2.2.10-2+deb11u6 | vulnerable |
| bookworm (security), bookworm | 2.5.0-1+deb12u1 | vulnerable |
| sid, trixie | 2.6.4-1 | 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.