PT-2021-3963 · Mozilla+4 · Firefox+4

Irvan Kurniawan · Published 2021-07-13 · Updated 2024-12-12 · CVE-2021-29972

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 90

Description The issue is related to a use-after-free vulnerability in the Cairo graphics library used by Mozilla Firefox. This vulnerability can be exploited by a remote attacker using a specially crafted malicious web page, potentially allowing the execution of arbitrary code or causing a denial of service. The vulnerability is due to an out-of-date Cairo library. Updating the library resolves the issue and may also remediate other unknown security vulnerabilities.

Recommendations For Firefox versions prior to 90, update the Cairo library to resolve the issue. As a temporary workaround, consider restricting access to potentially vulnerable web pages until the library can be updated.

Exploit

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

ALT-PU-2021-2261

ALT-PU-2021-2725

ALT-PU-2021-2881

ALT-PU-2021-3368

ALT-PU-2021-3369

ALT-PU-2022-1781

ALT-PU-2022-1782

BDU:2021-04482

CVE-2021-29972

OESA-2023-1673

OESA-2023-1674

OPENSUSE-SU-2024:10600-1

OPENSUSE-SU-2024:14572-1

USN-5011-1

Affected Products

Alt Linux

Astra Linux

Firefox

Linuxmint

Ubuntu

References · 2189

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/browser/firefox_jit_use_after_free.rb · Exploit
• 🔥 https://github.com/mistymntncop/CVE-2022-26485 · Exploit
• 🔥 https://github.com/aleksejspopovs/cve-2020-16012 · Exploit
• 🔥 https://github.com/HassanAzze/CVE-2020-6514 · Exploit
• 🔥 https://github.com/hasan-khalil/CVE-2020-6514 · Exploit
• 🔥 https://github.com/rojhack/CVE-2020-6514 · Exploit
• 🔥 https://github.com/R0jhack/CVE-2020-6514 · Exploit
• 🔥❌ https://github.com/marcinguy/CVE-2020-15999 · Exploit, Deleted
• 🔥 https://bugzilla.mozilla.org/show_bug.cgi?id=1696816 · Exploit
• https://mozilla.org/en-US/security/advisories/mfsa2021-28 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-34471 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-34479 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-26976 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-4047 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-38473 · Security Note