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Ubuntu 20.04 & 18.04 USN-5954-2 Critical: Firefox Software Fixes

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Calendar Grey March 27, 2023
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Important fixes for Firefox issues included in Ubuntu Security Notice USN-5954-2. Ensure you update your system to prevent complications.
USN-5954-1 caused some minor regressions in Firefox.

Summary

USN-5954-1 caused some minor regressions in Firefox.

Software Description:

- firefox: Mozilla Open Source web browser

Details:

USN-5954-1 fixed vulnerabilities in Firefox. The update introduced

several minor regressions. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

Multiple security issues were discovered in Firefox. If a user were

tricked into opening a specially crafted website, an attacker could

potentially exploit these to cause a denial of service, obtain sensitive

information across domains, or execute arbitrary code. (CVE-2023-25750,

CVE-2023-25752, CVE-2023-28162, CVE-2023-28176, CVE-2023-28177)

Lukas Bernhard discovered that Firefox did not properly manage memory

when invalidating JIT code while following an iterator. An attacker could

potentially exploits this issue to cause a denial of service.

(CVE-2023-25751)

Rob Wu discovered that Firefox did not properly manage the URLs when

...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory bug fix firefox ubuntu software regression

Update Instructions

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

Ubuntu 20.04 LTS:
  firefox                         111.0.1+build2-0ubuntu0.20.04.1

Ubuntu 18.04 LTS:
  firefox                         111.0.1+build2-0ubuntu0.18.04.1

After a standard system update you need to restart Firefox to make all the
necessary changes.

References

https://ubuntu.com/security/notices/USN-5954-2

https://ubuntu.com/security/notices/USN-5954-1

https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/2012696

Severity
critical
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Critical

March 27, 2023

Topics%20covered

Topics Covered

security advisory bug fix firefox ubuntu software regression

Package Information

https://launchpad.net/ubuntu/+source/firefox/111.0.1+build2-0ubuntu0.20.04.1
https://launchpad.net/ubuntu/+source/firefox/111.0.1+build2-0ubuntu0.18.04.1

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