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Ubuntu 21.10 USN-5321-1 Moderate: Firefox Denial of Service Risk

ubuntu
Calendar Grey March 10, 2022
Dist Ubuntu Esm H88
Ensure your Ubuntu version of Firefox is upgraded to mitigate several vulnerabilities that may leave users susceptible to threats from harmful websites.
Firefox could be made to crash or run programs as your login if it opened a malicious website.

Summary

Firefox could be made to crash or run programs as your login if it

opened a malicious website.

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, spoof the browser

UI, bypass security restrictions, obtain sensitive information, or execute

arbitrary code. (CVE-2022-0843, CVE-2022-26381, CVE-2022-26382,

CVE-2022-26383, CVE-2022-26384, CVE-2022-26385)

A TOCTOU bug was discovered when verifying addon signatures during

install. A local attacker could potentially exploit this to trick a

user into installing an addon with an invalid signature.

(CVE-2022-26387)

Topics%20covered

Topics Covered

security advisory moderate denial of service code execution Ubuntu firefox

Update Instructions

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

Ubuntu 21.10:
   firefox                         98.0+build3-0ubuntu0.21.10.2

Ubuntu 20.04 LTS:
   firefox                         98.0+build3-0ubuntu0.20.04.2

Ubuntu 18.04 LTS:
   firefox                         98.0+build3-0ubuntu0.18.04.2

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

References

https://ubuntu.com/security/notices/USN-5321-1

CVE-2022-0843, CVE-2022-26381, CVE-2022-26382, CVE-2022-26383,

CVE-2022-26384, CVE-2022-26385, CVE-2022-26387

Severity
important
Lowest
Low
Medium
High
Critical

March 10, 2022

Topics%20covered

Topics Covered

security advisory moderate denial of service code execution Ubuntu firefox

Package Information

https://launchpad.net/ubuntu/+source/firefox/98.0+build3-0ubuntu0.21.10.2
https://launchpad.net/ubuntu/+source/firefox/98.0+build3-0ubuntu0.20.04.2
https://launchpad.net/ubuntu/+source/firefox/98.0+build3-0ubuntu0.18.04.2

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