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CVE-2021-4129

CRITICAL

9.8

Description

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published12/22/2022

Last Modified4/16/2025

Sourcenvd

Honeypot Sightings0

Affected Products

mozilla:firefoxmozilla:firefox_esrmozilla:thunderbird

Weaknesses (CWE)

CWE-787CWE-787

References

https://bugzilla.mozilla.org/buglist.cgi?bug_id=1393362%2C1736046%2C1736751%2C1737009%2C1739372%2C1739421(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2021-52/(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2021-53/(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2021-54/(security@mozilla.org)

https://bugzilla.mozilla.org/buglist.cgi?bug_id=1393362%2C1736046%2C1736751%2C1737009%2C1739372%2C1739421(af854a3a-2127-422b-91ae-364da2661108)

https://www.mozilla.org/security/advisories/mfsa2021-52/(af854a3a-2127-422b-91ae-364da2661108)

https://www.mozilla.org/security/advisories/mfsa2021-53/(af854a3a-2127-422b-91ae-364da2661108)

https://www.mozilla.org/security/advisories/mfsa2021-54/(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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