==========================================================================
Ubuntu Security Notice USN-6509-2
December 04, 2023

firefox regressions
==========================================================================

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

- Ubuntu 20.04 LTS

Summary:

USN-6509-1 caused some minor regressions in Firefox.

Software Description:
- firefox: Mozilla Open Source web browser

Details:

USN-6509-1 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-2023-6206,
  CVE-2023-6210, CVE-2023-6211, CVE-2023-6212, CVE-2023-6213)
  
  It was discovered that Firefox did not properly manage memory when
  images were created on the canvas element. An attacker could potentially
  exploit this issue to obtain sensitive information. (CVE-2023-6204)
  
  It discovered that Firefox incorrectly handled certain memory when using a
  MessagePort. An attacker could potentially exploit this issue to cause a
  denial of service. (CVE-2023-6205)
  
  It discovered that Firefox incorrectly did not properly manage ownership
  in ReadableByteStreams. An attacker could potentially exploit this issue
  to cause a denial of service. (CVE-2023-6207)
  
  It discovered that Firefox incorrectly did not properly manage copy
  operations when using Selection API in X11. An attacker could potentially
  exploit this issue to obtain sensitive information. (CVE-2023-6208)
  
  Rachmat Abdul Rokhim discovered incorrectly handled parsing of relative
  URLS starting with "///". An attacker could potentially exploit this issue
  to cause a denial of service. (CVE-2023-6209)

Update instructions:

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

Ubuntu 20.04 LTS:
   firefox                         120.0.1+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-6509-2
   https://ubuntu.com/security/notices/USN-6509-1
   https://launchpad.net/bugs/2045518

Package Information:
   https://launchpad.net/ubuntu/+source/firefox/120.0.1+build1-0ubuntu0.20.04.1

Ubuntu 6509-2: Firefox regressions

December 4, 2023
USN-6509-1 caused some minor regressions in Firefox.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS Summary: USN-6509-1 caused some minor regressions in Firefox. Software Description: - firefox: Mozilla Open Source web browser Details: USN-6509-1 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-2023-6206, CVE-2023-6210, CVE-2023-6211, CVE-2023-6212, CVE-2023-6213) It was discovered that Firefox did not properly manage memory when images were created on the canvas element. An attacker could potentially exploit this issue to obtain sensitive information. (CVE-2023-6204) It discovered that Firefox incorrectly handled certain memory when using a MessagePort. An attacker could potentially exploit this issue to cause a denial of service. (CVE-2023-6205) It discovered that Firefox incorrectly did not properly manage ownership in ReadableByteStreams. An attacker could potentially exploit this issue to cause a denial of service. (CVE-2023-6207) It discovered that Firefox incorrectly did not properly manage copy operations when using Selection API in X11. An attacker could potentially exploit this issue to obtain sensitive information. (CVE-2023-6208) Rachmat Abdul Rokhim discovered incorrectly handled parsing of relative URLS starting with "///". An attacker could potentially exploit this issue to cause a denial of service. (CVE-2023-6209)

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: firefox 120.0.1+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-6509-2

https://ubuntu.com/security/notices/USN-6509-1

https://launchpad.net/bugs/2045518

Severity
Ubuntu Security Notice USN-6509-2

Package Information

https://launchpad.net/ubuntu/+source/firefox/120.0.1+build1-0ubuntu0.20.04.1

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