Debian Long Term Support / LTS Security Information / 2021 / Security Information -- DLA-2669-1 libxml2

Debian Security Advisory

DLA-2669-1 libxml2 -- LTS security update

Date Reported:

30 May 2021

Affected Packages:

libxml2

Vulnerable:

Yes

Security database references:

In Mitre's CVE dictionary: CVE-2021-3541.

More information:

An issue has been found in libxml2, the GNOME XML library. This issue is called "Parameter Laughs"-attack and is related to parameter entities expansion. It is similar to the "Billion Laughs"-attacks found earlier in libexpat. More information can be found at [1]

[1] https://blog.hartwork.org/posts/cve-2021-3541-parameter-laughs-fixed-in-libxml2-2-9-11/

For Debian 9 stretch, this problem has been fixed in version 2.9.4+dfsg1-2.2+deb9u5.

We recommend that you upgrade your libxml2 packages.

For the detailed security status of libxml2 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/libxml2

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS