CVE-2021-3541

NameCVE-2021-3541
DescriptionA flaw was found in libxml2. Exponential entity expansion attack its possible bypassing all existing protection mechanisms and leading to denial of service.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-2669-1
Debian Bugs988603

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libxml2 (PTS)buster2.9.4+dfsg1-7+deb10u4fixed
buster (security)2.9.4+dfsg1-7+deb10u6fixed
bullseye (security), bullseye2.9.10+dfsg-6.7+deb11u4fixed
bookworm2.9.14+dfsg-1.3~deb12u1fixed
sid, trixie2.9.14+dfsg-1.3fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libxml2sourcestretch2.9.4+dfsg1-2.2+deb9u5DLA-2669-1
libxml2sourcebuster2.9.4+dfsg1-7+deb10u2
libxml2source(unstable)2.9.10+dfsg-6.7988603

Notes

https://bugzilla.redhat.com/show_bug.cgi?id=1950515
https://gitlab.gnome.org/GNOME/libxml2/-/commit/8598060bacada41a0eb09d95c97744ff4e428f8e
https://gitlab.gnome.org/GNOME/libxml2/-/issues/228 (currently private)
https://blog.hartwork.org/posts/cve-2021-3541-parameter-laughs-fixed-in-libxml2-2-9-11/

Search for package or bug name: Reporting problems