CVE-2021-43538
CVSS V2 Medium 4.3
CVSS V3 Medium 4.3
Description
By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and pointer lock access, which could have been used for spoofing attacks. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.
Overview
- CVE ID
- CVE-2021-43538
- Assigner
- security@mozilla.org
- Vulnerability Status
- Analyzed
- Published Version
- 2021-12-08T22:15:09
- Last Modified Date
- 2022-12-09T15:55:13
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* | 1 | OR | 95.0 | |
| cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* | 1 | OR | 91.4.0 | |
| cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* | 1 | OR | 91.4.0 | |
| 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:N/I:P/A:N
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- PARTIAL
- Availability Impact
- NONE
- Base Score
- 4.3
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- NONE
- Base Score
- 4.3
- Base Severity
- MEDIUM
- Exploitability Score
- 2.8
- Impact Score
- 1.4
References
| Reference URL | Reference Tags |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1739091 | Issue Tracking Permissions Required 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://security.gentoo.org/glsa/202202-03 | Third Party Advisory |
| https://security.gentoo.org/glsa/202208-14 | |
| https://www.debian.org/security/2021/dsa-5026 | Third Party Advisory |
| https://www.debian.org/security/2022/dsa-5034 | Third Party Advisory |
| https://www.mozilla.org/security/advisories/mfsa2021-52/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2021-53/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2021-54/ | Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-43538 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43538 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 15:45:42 | Added to TrackCVE | |||
| 2022-12-06 03:25:59 | 2021-12-08T22:15Z | 2021-12-08T22:15:09 | CVE Published Date | updated |
| 2022-12-06 03:25:59 | 2022-08-10T20:15:23 | CVE Modified Date | updated | |
| 2022-12-06 03:25:59 | Undergoing Analysis | Vulnerability Status | updated | |
| 2022-12-06 03:26:04 | References | updated | ||
| 2022-12-09 16:13:22 | 2022-12-09T15:55:13 | CVE Modified Date | updated | |
| 2022-12-09 16:13:22 | Undergoing Analysis | Analyzed | Vulnerability Status | updated |