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USN-5320-1: Expat vulnerabilities and regression

10 March 2022

Several security issues and a regression were fixed in Expat.

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Releases

Packages

  • expat - XML parsing C library

Details

USN-5288-1 fixed several vulnerabilities in Expat. For CVE-2022-25236 it
caused a regression and an additional patch was required. This update address
this regression and several other vulnerabilities.

It was discovered that Expat incorrectly handled certain files.
An attacker could possibly use this issue to cause a denial of service.
(CVE-2022-25313)

It was discovered that Expat incorrectly handled certain files.
An attacker could possibly use this issue to cause a crash
or execute arbitrary code. This issue only affected Ubuntu 18.04 LTS,
Ubuntu 20.04 LTS, and Ubuntu 21.10. (CVE-2022-25314)

It was discovered that Expat incorrectly handled certain files.
An attacker could possibly use this issue to cause a crash or execute
arbitrary code. (CVE-2022-25315)

Original advisory 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. (CVE-2022-25236)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 21.10
Ubuntu 20.04
Ubuntu 18.04
Ubuntu 16.04
Ubuntu 14.04

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

References

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Further reading