CVE-2021-4129

Published: Dic 22, 2022 Last Modified: Apr 16, 2025 EU-VD ID: EUVD-2021-34003 Aliases: GSD-2021-4129
ExploitDB:
Other exploit source:
Google Dorks:
CRITICAL 9,8
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high

Description

AI Translation Available

Mozilla developers and community members Julian Hector, Randell Jesup, Gabriele Svelto, Tyson Smith, Christian Holler, and Masayuki Nakano reported memory safety bugs present in Firefox 94. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 95, Firefox ESR < 91.4.0, and Thunderbird < 91.4.0.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0030
Percentile
0,5th
Updated

EPSS Score Trend (Last 90 Days)

787

Out-of-bounds Write

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Availability Other
Potential Impacts:
Modify Memory Execute Unauthorized Code Or Commands Dos: Crash, Exit, Or Restart Unexpected State
Applicable Platforms
Languages: Assembly, C, C++, Memory-Unsafe
Technologies: ICS/OT
Likelihood of Exploit: High
View CWE Details
Application

Thunderbird by Mozilla

Product Information
Vendor Mozilla
Product Thunderbird
Version Range Affected
To 91.4.0 (exclusive)
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Firefox by Mozilla

Product Information
Vendor Mozilla
Product Firefox
Version Range Affected
To 95.0 (exclusive)
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Firefox Esr by Mozilla

Product Information
Vendor Mozilla
Product Firefox Esr
Version Range Affected
To 91.4.0 (exclusive)
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1393362%2C1…
Exploit Issue Tracking Vendor Advisory
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1393362%2C1736046%2C1736751%2C1…
https://www.mozilla.org/security/advisories/mfsa2021-52/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-52/
https://www.mozilla.org/security/advisories/mfsa2021-53/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-53/
https://www.mozilla.org/security/advisories/mfsa2021-54/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-54/
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1393362%2C1…
Exploit Issue Tracking Vendor Advisory
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1393362%2C1736046%2C1736751%2C1…
https://www.mozilla.org/security/advisories/mfsa2021-52/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-52/
https://www.mozilla.org/security/advisories/mfsa2021-53/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-53/
https://www.mozilla.org/security/advisories/mfsa2021-54/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-54/