CVE-2021-3541

NameCVE-2021-3541
DescriptionA flaw was found in libxml2. Exponential entity expansion attack its p ...
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-2669-1, ELA-436-1
Debian Bugs988603

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libxml2 (PTS)jessie, jessie (lts)2.9.1+dfsg1-5+deb8u11fixed
stretch2.9.4+dfsg1-2.2+deb9u2vulnerable
stretch (security)2.9.4+dfsg1-2.2+deb9u5fixed
buster2.9.4+dfsg1-7+deb10u2fixed
sid, bullseye2.9.10+dfsg-6.7fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libxml2sourcejessie2.9.1+dfsg1-5+deb8u11ELA-436-1
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/

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