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Ubuntu 20.04 LTS USN-6562-1 critical: firefox denial of service

ubuntu
Calendar Grey January 2, 2024
Dist Ubuntu Esm H88
Security flaws patched in Firefox for Ubuntu 20.04 LTS. Please consult this notice for update directions.
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-2023-6865,

CVE-2023-6857, CVE-2023-6858, CVE-2023-6859, CVE-2023-6866, CVE-2023-6867,

CVE-2023-6861, CVE-2023-6869, CVE-2023-6871, CVE-2023-6872, CVE-2023-6863,

CVE-2023-6864, CVE-2023-6873)

DoHyun Lee discovered that Firefox did not properly manage memory when used

on systems with the Mesa VM driver. An attacker could potentially exploit

this issue to execute arbitrary code. (CVE-2023-6856)

George Pantela and Hubert Kario discovered that Firefox using multiple NSS

NIST curves which were susceptible to a side-channel attack known as

"Minerva". An attacker could potentially exploit this issue to ...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu firefox update instructions browser exploit

Update Instructions

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

Ubuntu 20.04 LTS:
  firefox                         121.0+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-6562-1

CVE-2023-6135, CVE-2023-6856, CVE-2023-6857, CVE-2023-6858,

CVE-2023-6859, CVE-2023-6860, CVE-2023-6861, CVE-2023-6863,

CVE-2023-6864, CVE-2023-6865, CVE-2023-6866, CVE-2023-6867,

CVE-2023-6869, CVE-2023-6871, CVE-2023-6872, CVE-2023-6873

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6562-1

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu firefox update instructions browser exploit

Package Information

https://launchpad.net/ubuntu/+source/firefox/121.0+build1-0ubuntu0.20.04.1

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