CVE-2021-43534
CVSS V2 Medium 6.8
CVSS V3 High 8.8
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.
Overview
- CVE ID
- CVE-2021-43534
- Assigner
- security@mozilla.org
- Vulnerability Status
- Analyzed
- Published Version
- 2021-12-08T22:15:09
- Last Modified Date
- 2022-03-17T19:45:50
Weakness Enumerations
CPE Configuration (Product)
CPE | Vulnerable | Operator | Version Start | Version End |
---|---|---|---|---|
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* | 1 | OR | 94.0 | |
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* | 1 | OR | 91.3.0 | |
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* | 1 | OR | 91.3.0 | |
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 1 | OR | ||
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 1 | OR | ||
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 6.8
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 8.8
- Base Severity
- HIGH
- Exploitability Score
- 2.8
- Impact Score
- 5.9
References
Reference URL | Reference Tags |
---|---|
https://www.mozilla.org/security/advisories/mfsa2021-50/ | Vendor Advisory |
https://www.mozilla.org/security/advisories/mfsa2021-49/ | Vendor Advisory |
https://www.mozilla.org/security/advisories/mfsa2021-48/ | Vendor Advisory |
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1606864%2C1712671%2C1730048%2C1735152 | Broken Link Issue Tracking Vendor Advisory |
https://www.debian.org/security/2021/dsa-5026 | Third Party Advisory |
https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html | Mailing List Third Party Advisory |
https://www.debian.org/security/2022/dsa-5034 | Issue Tracking Third Party Advisory |
https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html | Mailing List Third Party Advisory |
Sources
Source Name | Source URL |
---|---|
NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-43534 |
MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43534 |
History
Created | Old Value | New Value | Data Type | Notes |
---|---|---|---|---|
2022-05-10 15:45:28 | Added to TrackCVE | |||
2022-12-06 03:25:39 | 2021-12-08T22:15Z | 2021-12-08T22:15:09 | CVE Published Date | updated |
2022-12-06 03:25:39 | 2022-03-17T19:45:50 | CVE Modified Date | updated | |
2022-12-06 03:25:39 | Analyzed | Vulnerability Status | updated |