PT-2021-2601 · Mozilla+4 · Firefox+4

Jan-Ivar Bruaroey · Published 2021-01-26 · Updated 2024-12-12 · CVE-2021-23958

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

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

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

Description The issue is related to errors in resource management, potentially allowing a remote attacker to gain unauthorized access to protected information. It could also cause the browser to leak unintended information by transferring a screen sharing state into another tab.

Recommendations For versions prior to 85, update to version 85 or later to resolve the issue. As a temporary workaround, consider restricting screen sharing functionality until the update is applied.

Exploit

Fix

Exposure of Resource to Wrong Sphere

Weakness Enumeration

CWE-399

CWE-668

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:2021-02084

CVE-2021-23958

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 · 2193

• 🔥 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://nvd.nist.gov/vuln/detail/CVE-2022-1529 · Security Note
• https://mozilla.org/en-US/security/advisories/mfsa2021-03/#CVE-2021-23958 · Vendor Advisory
• 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