| Name | CVE-2020-24977 |
| Description | GNOME project libxml2 v2.9.10 has a global buffer over-read vulnerability in xmlEncodeEntitiesInternal at libxml2/entities.c. The issue has been fixed in commit 50f06b3e. |
| 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-2369-1 |
| Debian Bugs | 969529 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| libxml2 (PTS) | buster | 2.9.4+dfsg1-7+deb10u4 | fixed |
| buster (security) | 2.9.4+dfsg1-7+deb10u6 | fixed |
| bullseye (security), bullseye | 2.9.10+dfsg-6.7+deb11u4 | fixed |
| bookworm | 2.9.14+dfsg-1.3~deb12u1 | fixed |
| sid, trixie | 2.9.14+dfsg-1.3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| libxml2 | source | stretch | 2.9.4+dfsg1-2.2+deb9u3 | | DLA-2369-1 | |
| libxml2 | source | buster | 2.9.4+dfsg1-7+deb10u2 | | | |
| libxml2 | source | (unstable) | 2.9.10+dfsg-6.2 | unimportant | | 969529 |
Notes
https://gitlab.gnome.org/GNOME/libxml2/-/issues/178
Fixed by: https://gitlab.gnome.org/GNOME/libxml2/-/commit/50f06b3efb638efb0abd95dc62dca05ae67882c2
The issue is specific and restricted to xmllint:
https://gitlab.gnome.org/GNOME/libxml2/-/issues/178#note_892545
and present before the 0b19f236a263 ("Fixed ICU to set flush correctly and
provide pivot buffer.") commit itself.
Crash in CLI tool, no security impact