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Ubuntu 20.04 LTS: USN-6509-1 Moderate: Firefox Denial of Service Threats

ubuntu
Calendar Grey November 23, 2023
Dist Ubuntu Esm H88
Various vulnerabilities in Firefox addressed in Ubuntu 20.04 LTS enhance performance and protect user privacy.
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-2023-6206,

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 ...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory moderate denial of service Ubuntu firefox information disclosure memory management

Update Instructions

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

Ubuntu 20.04 LTS:
   firefox                         120.0+build2-0ubuntu0.20.04.1

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

References

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

CVE-2023-6204, CVE-2023-6205, CVE-2023-6206, CVE-2023-6207,

CVE-2023-6208, CVE-2023-6209, CVE-2023-6210, CVE-2023-6211,

CVE-2023-6212, CVE-2023-6213

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6509-1

Topics%20covered

Topics Covered

security advisory moderate denial of service Ubuntu firefox information disclosure memory management

Package Information

https://launchpad.net/ubuntu/+source/firefox/120.0+build2-0ubuntu0.20.04.1

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