PT-2021-3798 · Mozilla+8 · Firefox Esr+10

Christoph Kerschbaumer + 3 · Published 2021-08-10 · Updated 2024-12-12 · CVE-2021-29989

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 91 Firefox ESR versions prior to 78.13 Thunderbird versions prior to 78.13

Description The issue is related to memory safety bugs, including evidence of memory corruption, which could potentially be exploited to run arbitrary code with sufficient effort. It is also associated with a boundary error when processing HTML content, allowing a remote attacker to execute arbitrary code and cause memory damage.

Recommendations For Firefox versions prior to 91, update to version 91 or later. For Firefox ESR versions prior to 78.13, update to version 78.13 or later. For Thunderbird versions prior to 78.13, update to version 78.13 or later.

Exploit

Fix

Buffer Overflow

Memory Corruption

Weakness Enumeration

CWE-119

CWE-787

Related Identifiers

ALT-PU-2021-2479

ALT-PU-2021-2481

ALT-PU-2021-2488

ALT-PU-2021-2491

ALT-PU-2021-2501

ALT-PU-2021-2504

ALT-PU-2021-2527

ALT-PU-2021-2607

ALT-PU-2021-2624

ALT-PU-2021-2636

ALT-PU-2021-2718

ALT-PU-2021-2725

ALT-PU-2021-2849

ALT-PU-2021-2881

ALT-PU-2021-3368

ALT-PU-2021-3369

ALT-PU-2022-1781

ALT-PU-2022-1782

BDU:2021-04073

CESA-2021_3154

CESA-2021_3155

CESA-2021_3157

CESA-2021_3160

CVE-2021-29989

DLA-2740-1

DLA-2745-1

DSA-4956-1

DSA-4959-1

MGASA-2021-0403

MGASA-2021-0407

OESA-2023-1673

OESA-2023-1674

OPENSUSE-SU-2021:1184-1

OPENSUSE-SU-2021:1367-1

OPENSUSE-SU-2021:2774-1

OPENSUSE-SU-2021:2874-1

OPENSUSE-SU-2021:3331-1

OPENSUSE-SU-2021:3451-1

OPENSUSE-SU-2021_1184-1

OPENSUSE-SU-2021_1367-1

OPENSUSE-SU-2021_2774-1

OPENSUSE-SU-2021_2874-1

OPENSUSE-SU-2021_3331-1

OPENSUSE-SU-2021_3451-1

OPENSUSE-SU-2024:10600-1

OPENSUSE-SU-2024:10601-1

OPENSUSE-SU-2024:14572-1

RHSA-2021:3154

RHSA-2021:3155

RHSA-2021:3156

RHSA-2021:3157

RHSA-2021:3159

RHSA-2021:3160

RHSA-2021:3161

RHSA-2021:3162

RHSA-2021_3154

RHSA-2021_3155

RHSA-2021_3157

RHSA-2021_3160

RLSA-2021:3155

RLSA-2021:3157

SUSE-SU-2021:14782-1

SUSE-SU-2021:14821-1

SUSE-SU-2021:14826-1

SUSE-SU-2021:2691-1

SUSE-SU-2021:2694-1

SUSE-SU-2021:2774-1

SUSE-SU-2021:2874-1

SUSE-SU-2021:3191-1

SUSE-SU-2021:3331-1

SUSE-SU-2021:3451-1

SUSE-SU-2021_14782-1

SUSE-SU-2021_14821-1

SUSE-SU-2021_14826-1

SUSE-SU-2022:1577-1

SUSE-SU-2022:1582-1

SUSE-SU-2022_1577-1

SUSE-SU-2022_1582-1

USN-5037-1

USN-5037-2

USN-5058-1

Affected Products

Alt Linux

Astra Linux

Centos

Firefox

Firefox Esr

Linuxmint

Red Hat

Rocky Linux

Suse

Thunderbird

Ubuntu

References · 2374

• 🔥 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://safe-surf.ru/specialists/bulletins-nkcki/683483 · Security Note
• 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
• https://advisories.mageia.org/MGASA-2021-0403.html · Security Note