CVE-2021-23995
CVSS V2 Medium 5.1
CVSS V3 High 8.8
Description
When Responsive Design Mode was enabled, it used references to objects that were previously freed. We presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
Overview
- CVE ID
- CVE-2021-23995
- Assigner
- security@mozilla.org
- Vulnerability Status
- Analyzed
- Published Version
- 2021-06-24T14:15:09
- Last Modified Date
- 2021-07-02T16:59:18
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* | 1 | OR | 88.0 | |
| cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* | 1 | OR | 78.10 | |
| cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* | 1 | OR | 78.10 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:H/Au:N/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- HIGH
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 5.1
- Severity
- MEDIUM
- Exploitability Score
- 4.9
- 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/mfsa2021-15/ | Release Notes Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2021-16/ | Release Notes Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2021-14/ | Release Notes Vendor Advisory |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1699835 | Issue Tracking Permissions Required Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-23995 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23995 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:09:01 | Added to TrackCVE | |||
| 2022-12-05 04:55:01 | 2021-06-24T14:15Z | 2021-06-24T14:15:09 | CVE Published Date | updated |
| 2022-12-05 04:55:01 | 2021-07-02T16:59:18 | CVE Modified Date | updated | |
| 2022-12-05 04:55:01 | Analyzed | Vulnerability Status | updated |