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Ubuntu Security Notice USN-6456-2
November 14, 2023

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

- Ubuntu 20.04 LTS

Summary:

USN-6456-1 caused some minor regressions in Firefox.

Software Description:
- firefox: Mozilla Open Source web browser

Details:

USN-6456-1 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-2023-5722,
 CVE-2023-5724, CVE-2023-5728, CVE-2023-5729, CVE-2023-5730, CVE-2023-5731)
 
 Kelsey Gilbert discovered that Firefox did not properly manage certain
 browser prompts and dialogs due to an insufficient activation-delay. An
 attacker could potentially exploit this issue to perform clickjacking.
 (CVE-2023-5721)
 
 Daniel Veditz discovered that Firefox did not properly validate a cookie
 containing invalid characters. An attacker could potentially exploit this
 issue to cause a denial of service. (CVE-2023-5723)
 
 Shaheen Fazim discovered that Firefox did not properly validate the URLs
 open by installed WebExtension. An attacker could potentially exploit this
 issue to obtain sensitive information. (CVE-2023-5725)

Update instructions:

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

Ubuntu 20.04 LTS:
  firefox                         119.0.1+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-6456-2
  https://ubuntu.com/security/notices/USN-6456-1
  https://launchpad.net/bugs/2043441

Package Information:
  https://launchpad.net/ubuntu/+source/firefox/119.0.1+build1-0ubuntu0.20.04.1

Ubuntu 6456-2: Firefox regressions

November 14, 2023
USN-6456-1 caused some minor regressions in Firefox.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS Summary: USN-6456-1 caused some minor regressions in Firefox. Software Description: - firefox: Mozilla Open Source web browser Details: USN-6456-1 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-2023-5722, CVE-2023-5724, CVE-2023-5728, CVE-2023-5729, CVE-2023-5730, CVE-2023-5731) Kelsey Gilbert discovered that Firefox did not properly manage certain browser prompts and dialogs due to an insufficient activation-delay. An attacker could potentially exploit this issue to perform clickjacking. (CVE-2023-5721) Daniel Veditz discovered that Firefox did not properly validate a cookie containing invalid characters. An attacker could potentially exploit this issue to cause a denial of service. (CVE-2023-5723) Shaheen Fazim discovered that Firefox did not properly validate the URLs open by installed WebExtension. An attacker could potentially exploit this issue to obtain sensitive information. (CVE-2023-5725)

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: firefox 119.0.1+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-6456-2

https://ubuntu.com/security/notices/USN-6456-1

https://launchpad.net/bugs/2043441

Severity
Ubuntu Security Notice USN-6456-2

Package Information

https://launchpad.net/ubuntu/+source/firefox/119.0.1+build1-0ubuntu0.20.04.1

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