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Ubuntu Security Notice USN-6649-2
March 06, 2024

firefox regressions
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS

Summary:

USN-6649-1 caused some minor regressions in Firefox.

Software Description:
- firefox: Mozilla Open Source web browser

Details:

USN-6649-1 fixed vulnerabilities in Firefox. The update introduced
several minor regressions. This update fixes the problem.

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-2024-1547,
 CVE-2024-1548, CVE-2024-1549, CVE-2024-1550, CVE-2024-1553, CVE-2024-1554,
 CVE-2024-1555, CVE-2024-1557)
 
 Alfred Peters discovered that Firefox did not properly manage memory when
 storing and re-accessing data on a networking channel. An attacker could
 potentially exploit this issue to cause a denial of service.
 (CVE-2024-1546)
 
 Johan Carlsson discovered that Firefox incorrectly handled Set-Cookie
 response headers in multipart HTTP responses. An attacker could
 potentially exploit this issue to inject arbitrary cookie values.
 (CVE-2024-1551)
 
 Gary Kwong discovered that Firefox incorrectly generated codes on 32-bit
 ARM devices, which could lead to unexpected numeric conversions or
 undefined behaviour. An attacker could possibly use this issue to cause a
 denial of service. (CVE-2024-1552)
 
 Ronald Crane discovered that Firefox did not properly manage memory when
 accessing the built-in profiler. An attacker could potentially exploit
 this issue to cause a denial of service. (CVE-2024-1556)

Update instructions:

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

Ubuntu 20.04 LTS:
  firefox                         123.0.1+build1-0ubuntu0.20.04.1

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

References:
  https://ubuntu.com/security/notices/USN-6649-2
  https://ubuntu.com/security/notices/USN-6649-1
  https://launchpad.net/bugs/2056258

Package Information:
  https://launchpad.net/ubuntu/+source/firefox/123.0.1+build1-0ubuntu0.20.04.1