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USN-5638-2: Expat vulnerabilities

17 November 2022

Expat could be made to crash or execute arbitrary code.

Releases

Packages

  • expat - XML parsing C library

Details

USN-5638-1 fixed a vulnerability in Expat. This update provides
the corresponding updates for Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and
Ubuntu 22.04 LTS.

It was discovered that Expat incorrectly handled memory in out-of-memory
situations. An attacker could possibly use this issue to cause a crash,
resulting in a denial of service, or possibly execute arbitrary code.
This issue only affected Ubuntu 18.04 LTS. (CVE-2022-43680)

Original advisory details:

Rhodri James discovered that Expat incorrectly handled memory when
processing certain malformed XML files. An attacker could possibly
use this issue to cause a crash or execute arbitrary code.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 22.04
Ubuntu 20.04
Ubuntu 18.04

In general, a standard system update will make all the necessary changes.

Related notices

  • USN-5638-3: libexpat1, expat, lib64expat1, libexpat1-dev, lib64expat1-dev
  • USN-5638-1: libexpat1, expat, lib64expat1, libexpat1-dev, lib64expat1-dev
  • USN-5726-1: firefox-locale-is, firefox-locale-gu, firefox-locale-ko, firefox-locale-mai, firefox-locale-zh-hant, firefox-locale-hu, firefox-locale-fa, firefox-locale-he, firefox-locale-et, firefox-locale-uk, firefox-locale-an, firefox-locale-ru, firefox-locale-szl, firefox-locale-ast, firefox-locale-da, firefox-locale-nn, firefox-locale-cy, firefox-locale-de, firefox-locale-sk, firefox-locale-gl, firefox-locale-bg, firefox-locale-bn, firefox, firefox-locale-ur, firefox-locale-xh, firefox-locale-nb, firefox-locale-csb, firefox-locale-ar, firefox-locale-ga, firefox-locale-eo, firefox-locale-kk, firefox-locale-cs, firefox-locale-id, firefox-locale-oc, firefox-locale-br, firefox-locale-sr, firefox-dev, firefox-locale-el, firefox-locale-sq, firefox-locale-ka, firefox-locale-ia, firefox-locale-ca, firefox-locale-si, firefox-locale-my, firefox-locale-zh-hans, firefox-locale-ja, firefox-locale-tr, firefox-locale-vi, firefox-locale-hi, firefox-locale-cak, firefox-locale-it, firefox-locale-kab, firefox-locale-ms, firefox-locale-ta, firefox-locale-mr, firefox-locale-az, firefox-locale-be, firefox-locale-bs, firefox-locale-as, firefox-locale-nso, firefox-locale-pt, firefox-locale-lg, firefox-locale-hr, firefox-locale-hy, firefox-locale-lv, firefox-locale-ro, firefox-locale-sv, firefox-locale-mk, firefox-locale-gn, firefox-locale-fi, firefox-locale-fy, firefox-locale-zu, firefox-locale-es, firefox-locale-th, firefox-locale-km, firefox-locale-ku, firefox-locale-pa, firefox-locale-sl, firefox-locale-fr, firefox-locale-or, firefox-locale-uz, firefox-locale-ne, firefox-locale-mn, firefox-geckodriver, firefox-locale-gd, firefox-locale-hsb, firefox-locale-sw, firefox-locale-af, firefox-locale-eu, firefox-locale-en, firefox-locale-kn, firefox-locale-lt, firefox-mozsymbols, firefox-locale-pl, firefox-locale-ml, firefox-locale-nl, firefox-locale-te