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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-43534 Detail

Description

Mozilla developers and community members reported memory safety bugs present in Firefox 93 and Firefox ESR 91.2. 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 < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.


Severity

 


CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  8.8 HIGH
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1606864%2C1712671%2C1730048%2C1735152 Broken Link  Issue Tracking  Vendor Advisory 
https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html Mailing List  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html Mailing List  Third Party Advisory 
https://www.debian.org/security/2021/dsa-5026 Third Party Advisory 
https://www.debian.org/security/2022/dsa-5034 Issue Tracking  Third Party Advisory 
https://www.mozilla.org/security/advisories/mfsa2021-48/ Vendor Advisory 
https://www.mozilla.org/security/advisories/mfsa2021-49/ Vendor Advisory 
https://www.mozilla.org/security/advisories/mfsa2021-50/ Vendor Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-787 Out-of-bounds Write cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

7 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-43534
NVD Published Date:
12/08/2021
NVD Last Modified:
03/17/2022
Source:
Mozilla Corporation