CVE-2022-40960: Use After Free

Reference Links

• https://bugzilla.mozilla.org/show_bug.cgi?id=1787633
• https://www.mozilla.org/en-US/security/advisories/mfsa2022-42/
• https://www.mozilla.org/en-US/security/advisories/mfsa2022-40/
• https://www.mozilla.org/en-US/security/advisories/mfsa2022-41/
• https://www.mozilla.org/security/advisories/mfsa2022-40/
• https://www.mozilla.org/security/advisories/mfsa2022-41/
• https://www.mozilla.org/security/advisories/mfsa2022-42/

Parent vulnerabilities

(Appears in the following advisories)

• MFSA2022-42
• MFSA2022-41
• MFSA2022-40

Peer vulnerabilities

(Found alongside the following vulnerabilities)

• CVE-2022-3266
• CVE-2022-40959
• CVE-2022-40960
• CVE-2022-40958
• CVE-2022-40956
• CVE-2022-40957
• CVE-2022-3155
• CVE-2022-40962
• CVE-2022-46880
• CVE-2022-40961

Frequently Asked Questions

• What is CVE-2022-40960?

  CVE-2022-40960 is a vulnerability in Firefox ESR, Thunderbird, and Firefox that allows concurrent use of the URL parser with non-UTF-8 data, leading to a use-after-free and potentially exploitable crash.

• Which software versions are affected by CVE-2022-40960?

  Firefox ESR versions below 102.3, Thunderbird versions below 102.3, and Firefox versions below 105 are affected by CVE-2022-40960.

• How severe is CVE-2022-40960?

  CVE-2022-40960 has a severity value of 6.5, which is considered high.

• How can I fix CVE-2022-40960?

  To fix CVE-2022-40960, update to Firefox ESR version 102.3 or later, Thunderbird version 102.3 or later, or Firefox version 105 or later.

• Where can I find more information about CVE-2022-40960?

  You can find more information about CVE-2022-40960 in the following references: - [Mozilla Bugzilla](https://bugzilla.mozilla.org/show_bug.cgi?id=1787633) - [Mozilla Security Advisory](https://www.mozilla.org/en-US/security/advisories/mfsa2022-42/) - [Mozilla Security Advisory](https://www.mozilla.org/en-US/security/advisories/mfsa2022-40/)