PT-2021-2596 · Mozilla+4 · Firefox+4

Christian Holler + 2 · Published 2021-01-26 · Updated 2024-12-12 · CVE-2021-23965

Positive Technologies (AI Summary)

CVSS v2.0

10

High

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 85

Description The issue is related to memory safety bugs present in Firefox, which showed evidence of memory corruption. It is presumed that with enough effort, some of these bugs could have been exploited to run arbitrary code. The vulnerability is also described as a buffer overflow in memory, which could allow a remote attacker to execute arbitrary code.

Recommendations For versions prior to 85, update to version 85 or later to resolve the issue. As a temporary workaround, consider restricting access to sensitive features or modules in Firefox until the update is applied.

Exploit

Fix

Buffer Overflow

Memory Corruption

Weakness Enumeration

CWE-119

CWE-787

Related Identifiers

ALT-PU-2021-1162

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:2021-02079

CVE-2021-23965

OESA-2023-1673

OESA-2023-1674

OPENSUSE-SU-2024:10600-1

OPENSUSE-SU-2024:14572-1

USN-4717-1

USN-4717-2

Affected Products

Alt Linux

Astra Linux

Firefox

Linuxmint

Ubuntu

References · 2196

• 🔥 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/R0jhack/CVE-2020-6514 · Exploit
• 🔥 https://github.com/HassanAzze/CVE-2020-6514 · Exploit
• 🔥 https://github.com/rojhack/CVE-2020-6514 · Exploit
• 🔥 https://github.com/hasan-khalil/CVE-2020-6514 · Exploit
• 🔥❌ https://github.com/marcinguy/CVE-2020-15999 · Exploit, Deleted
• 🔥 https://bugzilla.mozilla.org/buglist.cgi?bug_id=1670378%2C1673555%2C1676812%2C1678582%2C1684497 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2022-1529 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-25730 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-23603 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-28162 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-38477 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-26978 · Security Note