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Ubuntu 22.10: USN-5638-3 Critical: Expat Crash And Code Execution

ubuntu
Calendar Grey November 23, 2022
Dist Ubuntu Esm H88
The Ubuntu expat library has critical vulnerabilities that may cause system instability or allow unauthorized code execution. It is vital to apply updates quickly to protect your systems
Expat could be made to crash or execute arbitrary code.

Summary

Expat could be made to crash or execute arbitrary code.

Software Description:

- expat: XML parsing C library

Details:

USN-5638-1 fixed a vulnerability in Expat. This update provides

the corresponding updates for Ubuntu 16.04 ESM, Ubuntu 18.04 LTS,

Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu 22.10. (CVE-2022-43680)

This update also fixes a minor regression introduced in

Ubuntu 18.04 LTS.

We apologize for the inconvenience.

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.

Topics%20covered

Topics Covered

security advisory security update code execution arbitrary code execution ubuntu crash expat

Update Instructions

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

Ubuntu 22.10:
   expat                           2.4.8-2ubuntu0.22.10.1
   libexpat1                       2.4.8-2ubuntu0.22.10.1

Ubuntu 22.04 LTS:
   expat                           2.4.7-1ubuntu0.2
   libexpat1                       2.4.7-1ubuntu0.2

Ubuntu 20.04 LTS:
   expat                           2.2.9-1ubuntu0.6
   libexpat1                       2.2.9-1ubuntu0.6

Ubuntu 18.04 LTS:
   expat                           2.2.5-3ubuntu0.9
   libexpat1                       2.2.5-3ubuntu0.9

Ubuntu 16.04 ESM:
   expat                           2.1.0-7ubuntu0.16.04.5+esm7
   lib64expat1                     2.1.0-7ubuntu0.16.04.5+esm7
   libexpat1                       2.1.0-7ubuntu0.16.04.5+esm7

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

References

 

  https://ubuntu.com/security/notices/USN-5638-1

  CVE-2022-43680

Severity
critical
Lowest
Low
Medium
High
Critical

November 23, 2022

Topics%20covered

Topics Covered

security advisory security update code execution arbitrary code execution ubuntu crash expat

Package Information

https://launchpad.net/ubuntu/+source/expat/2.4.8-2ubuntu0.22.10.1
  https://launchpad.net/ubuntu/+source/expat/2.4.7-1ubuntu0.2
  https://launchpad.net/ubuntu/+source/expat/2.2.9-1ubuntu0.6
  https://launchpad.net/ubuntu/+source/expat/2.2.5-3ubuntu0.9

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