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Ubuntu 20.04: USN-7334-1 critical: firefox denial of service

ubuntu
Calendar Grey March 6, 2025
Dist Ubuntu Esm H88
Multiple vulnerabilities addressed in Firefox for Ubuntu 20.04, encompassing risk of service disruption and potential code execution exploits. Upgrade immediately!
Several security issues were fixed in Firefox.

Summary

Several security issues were fixed in Firefox.

Software Description:

- firefox: Mozilla Open Source web browser

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-2025-1933,

CVE-2025-1934, CVE-2025-1935, CVE-2025-1936, CVE-2025-1937, CVE-2025-1942)

It was discovered that Firefox did not properly handle WebTransport

connection, leading to a use-after-free vulnerability. An attacker could

potentially exploit this issue to cause a denial of service.

(CVE-2025-1931)

Ivan Fratric discovered that Firefox did not properly handle XSLT sorting,

leading to a out-of-bounds access vulnerability. An attacker could

potentially exploit this issue to cause a denial of service, or execute

arbitrary code. (CVE-2025-1932)

Topics%20covered

Topics Covered

security advisory denial of service code execution Ubuntu Firefox

Update Instructions

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

Ubuntu 20.04 LTS
  firefox                         136.0+build3-0ubuntu0.20.04.1

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

References

https://ubuntu.com/security/notices/USN-7334-1

CVE-2025-1931, CVE-2025-1932, CVE-2025-1933, CVE-2025-1934,

CVE-2025-1935, CVE-2025-1936, CVE-2025-1937, CVE-2025-1942

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7334-1

Topics%20covered

Topics Covered

security advisory denial of service code execution Ubuntu Firefox

Package Information

https://launchpad.net/ubuntu/+source/firefox/136.0+build3-0ubuntu0.20.04.1

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