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USN-6703-1: Firefox vulnerabilities

20 March 2024

Several security issues were fixed in Firefox.

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Releases

Packages

  • 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-2024-2609,
CVE-2024-2611, CVE-2024-2614, CVE-2024-2615)

Hubert Kario discovered that Firefox had a timing side-channel when
performing RSA decryption. A remote attacker could possibly use this
issue to recover sensitive information. (CVE-2023-5388)

It was discovered that Firefox did not properly handle WASM register
values in some circumstances. An attacker could potentially exploit this
issue to cause a denial of service. (CVE-2024-2606)

Gary Kwong discovered that Firefox incorrectly updated return registers
for JIT code on Armv7-A systems. An attacker could potentially exploit
this issue to execute arbitrary code. (CVE-2024-2607)

Ronald Crane discovered that Firefox did not properly manage memory during
character encoding. An attacker could potentially exploit this issue to
cause a denial of service. (CVE-2024-2608)

Georg Felber and Marco Squarcina discovered that Firefox incorrectly
handled html and body tags. An attacker who was able to inject markup into
a page otherwise protected by a Content Security Policy may have been able
obtain sensitive information. (CVE-2024-2610)

Ronald Crane discovered a use-after-free in Firefox when handling code in
SafeRefPtr. An attacker could potentially exploit this issue to cause a
denial of service, or execute arbitrary code. (CVE-2024-2612)

Max Inden discovered that Firefox incorrectly handled QUIC ACK frame
decoding. A attacker could potentially exploit this issue to cause a
denial of service. (CVE-2024-2613)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 20.04

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

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