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Ubuntu 21.10: USN-5288-1 Critical Expat Issues Resolved

ubuntu
Calendar Grey February 21, 2022
Dist Ubuntu Esm H88
Measures to address severe Expat flaws across various Ubuntu releases disclosed in USN-5288-1. Take swift action to protect your environments.
Several security issues were fixed in Expat.

Summary

Several security issues were fixed in Expat.

Software Description:

- expat: XML parsing C library

Details:

It was discovered that Expat incorrectly handled certain files.

An attacker could possibly use this issue to cause a crash or

execute arbitrary code.

Topics%20covered

Topics Covered

security advisory critical issue software update Ubuntu attack vector expat

Update Instructions

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

Ubuntu 21.10:
  libexpat1                       2.4.1-2ubuntu0.1

Ubuntu 20.04 LTS:
  libexpat1                       2.2.9-1ubuntu0.2

Ubuntu 18.04 LTS:
  libexpat1                       2.2.5-3ubuntu0.4

Ubuntu 16.04 ESM:
  lib64expat1                     2.1.0-7ubuntu0.16.04.5+esm2
  libexpat1                       2.1.0-7ubuntu0.16.04.5+esm2

Ubuntu 14.04 ESM:
  lib64expat1                     2.1.0-4ubuntu1.4+esm4
  libexpat1                       2.1.0-4ubuntu1.4+esm4

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

References

https://ubuntu.com/security/notices/USN-5288-1

CVE-2021-45960, CVE-2021-46143, CVE-2022-22822, CVE-2022-22823,

CVE-2022-22824, CVE-2022-22825, CVE-2022-22826, CVE-2022-22827,

CVE-2022-23852, CVE-2022-23990, CVE-2022-25235, CVE-2022-25236

Severity
critical
Lowest
Low
Medium
High
Critical

February 21, 2022

Topics%20covered

Topics Covered

security advisory critical issue software update Ubuntu attack vector expat

Package Information

https://launchpad.net/ubuntu/+source/expat/2.4.1-2ubuntu0.1
https://launchpad.net/ubuntu/+source/expat/2.2.9-1ubuntu0.2
https://launchpad.net/ubuntu/+source/expat/2.2.5-3ubuntu0.4

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