[USN-5131-1] Firefox vulnerabilities

========================================================================== Ubuntu Security Notice USN-5131-1 November 03, 2021
firefox vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 21.10 – Ubuntu 21.04 – Ubuntu 20.04 LTS – Ubuntu 18.04 LTS
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, bypass security restrictions, spoof the browser UI, confuse the user, conduct phishing attacks, or execute arbitrary code. (CVE-2021-38503, CVE-2021-38504, CVE-2021-38506, CVE-2021-38507, CVE-2021-38508, CVE-2021-38509)
It was discovered that the ‘Copy Image Link’ context menu action would copy the final image URL after redirects. If a user were tricked into copying and pasting a link for an embedded image that triggered authentication flows back to the page, an attacker could potentially exploit this to steal authentication tokens.
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 21.10: firefox 94.0+build3-0ubuntu0.21.10.1
Ubuntu 21.04: firefox 94.0+build3-0ubuntu0.21.04.1
Ubuntu 20.04 LTS: firefox 94.0+build3-0ubuntu0.20.04.1
Ubuntu 18.04 LTS: firefox 94.0+build3-0ubuntu0.18.04.1
After a standard system update you need to restart Firefox to make all the necessary changes.
References: ubuntu.com/security/notices/USN-5131-1 CVE-2021-38503, CVE-2021-38504, CVE-2021-38506, CVE-2021-38507, CVE-2021-38508, CVE-2021-38509
Package Information: launchpad.net/ubuntu/+source/firefox/94.0+build3-0ubuntu0.21.10.1 launchpad.net/ubuntu/+source/firefox/94.0+build3-0ubuntu0.21.04.1 launchpad.net/ubuntu/+source/firefox/94.0+build3-0ubuntu0.20.04.1 launchpad.net/ubuntu/+source/firefox/94.0+build3-0ubuntu0.18.04.1