CVE-2021-29966

Mozilla developers reported memory safety bugs present in Firefox 88. 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 < 89.

CVSS v3 8.8 HIGH
CVSS v2.0 6.8 MEDIUM

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1660307%2C1686154%2C1702948%2C1708124	Issue Tracking Broken Link
https://security.gentoo.org/glsa/202107-09	Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2021-23/	Release Notes Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

History

03 May 2022, 16:04

Type	Values Removed	Values Added
CWE	~~CWE-119~~	CWE-787

20 Sep 2021, 18:50

Type	Values Removed	Values Added
References		(GENTOO) https://security.gentoo.org/glsa/202107-09 - Third Party Advisory

25 Jun 2021, 13:22

Type	Values Removed	Values Added
CPE		cpe:2.3:a:mozilla:firefox::::::::
References	~~(MISC) https://www.mozilla.org/security/advisories/mfsa2021-23/ -~~	(MISC) https://www.mozilla.org/security/advisories/mfsa2021-23/ - Release Notes, Vendor Advisory
References	~~(MISC) https://bugzilla.mozilla.org/buglist.cgi?bug_id=1660307%2C1686154%2C1702948%2C1708124 -~~	(MISC) https://bugzilla.mozilla.org/buglist.cgi?bug_id=1660307%2C1686154%2C1702948%2C1708124 - Issue Tracking, Broken Link
CWE		CWE-119
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : 6.8 v3 : 8.8

24 Jun 2021, 14:20

Type	Values Removed	Values Added
New CVE

Information

Published : 2021-06-24 14:15

Updated : 2023-12-10 13:55

NVD link : CVE-2021-29966

Mitre link : CVE-2021-29966

CVE.ORG link : CVE-2021-29966

JSON object : View

Products Affected

mozilla

firefox

CWE

CWE-787

Out-of-bounds Write

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