PT-2021-3562 · Mozilla+8 · Firefox+10

Emil Ghitta + 4 · Published 2021-07-13 · Updated 2024-12-12 · CVE-2021-29976

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 90 Firefox ESR versions prior to 78.12 Thunderbird versions prior to 78.12

Description The issue is related to memory safety bugs present in code shared between Firefox and Thunderbird, which can lead to memory corruption. With sufficient effort, these bugs could potentially be exploited to run arbitrary code, allowing a remote attacker to access confidential data, compromise its integrity, and cause a denial of service.

Recommendations For Firefox versions prior to 90, update to version 90 or later. For Firefox ESR versions prior to 78.12, update to version 78.12 or later. For Thunderbird versions prior to 78.12, update to version 78.12 or later.

Exploit

Fix

Buffer Overflow

Memory Corruption

Weakness Enumeration

CWE-119

CWE-787

Related Identifiers

ALT-PU-2021-2229

ALT-PU-2021-2233

ALT-PU-2021-2248

ALT-PU-2021-2255

ALT-PU-2021-2257

ALT-PU-2021-2261

ALT-PU-2021-2269

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:2021-03661

CESA-2021_2741

CESA-2021_2743

CESA-2021_2883

CVE-2021-29976

DLA-2709-1

DLA-2711-1

DSA-4939-1

DSA-4940-1

MGASA-2021-0354

MGASA-2021-0355

OESA-2023-1673

OESA-2023-1674

OPENSUSE-SU-2021:1066-1

OPENSUSE-SU-2021:1091-1

OPENSUSE-SU-2021:2393-1

OPENSUSE-SU-2021:2458-1

OPENSUSE-SU-2021_1066-1

OPENSUSE-SU-2021_1091-1

OPENSUSE-SU-2021_2393-1

OPENSUSE-SU-2021_2458-1

OPENSUSE-SU-2024:10600-1

OPENSUSE-SU-2024:10601-1

OPENSUSE-SU-2024:14572-1

RHSA-2021:2740

RHSA-2021:2741

RHSA-2021:2742

RHSA-2021:2743

RHSA-2021:2881

RHSA-2021:2882

RHSA-2021:2883

RHSA-2021:2914

RHSA-2021_2741

RHSA-2021_2743

RHSA-2021_2881

RHSA-2021_2883

RLSA-2021:2743

RLSA-2021:2883

SUSE-SU-2021:14766-1

SUSE-SU-2021:2389-1

SUSE-SU-2021:2393-1

SUSE-SU-2021:2458-1

SUSE-SU-2021:2478-1

SUSE-SU-2021_14766-1

USN-5011-1

USN-5058-1

Affected Products

Alt Linux

Astra Linux

Centos

Firefox

Firefox Esr

Linuxmint

Red Hat

Rocky Linux

Suse

Thunderbird

Ubuntu

References · 2348

• 🔥 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://osv.dev/vulnerability/SUSE-SU-2021:2458-1 · Vendor Advisory
• 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://osv.dev/vulnerability/SUSE-SU-2021:14766-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-28162 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-38477 · Security Note