CVE-2021-29945
CVSS V2 Medium 4.3
CVSS V3 Medium 6.5
Description
The WebAssembly JIT could miscalculate the size of a return type, which could lead to a null read and result in a crash. *Note: This issue only affected x86-32 platforms. Other platforms are unaffected.*. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
Overview
- CVE ID
- CVE-2021-29945
- Assigner
- security@mozilla.org
- Vulnerability Status
- Analyzed
- Published Version
- 2021-06-24T14:15:09
- Last Modified Date
- 2021-06-30T19:01:06
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:x86:* | 1 | OR | 88.0 | |
| cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:x86:* | 1 | OR | 78.10 | |
| cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:x86:* | 1 | OR | 78.10 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:N/I:N/A:P
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- PARTIAL
- 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:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 6.5
- Base Severity
- MEDIUM
- Exploitability Score
- 2.8
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1700690 | Issue Tracking Permissions Required Vendor Advisory |
| 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 |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-29945 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29945 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:09:20 | Added to TrackCVE | |||
| 2022-12-05 04:55:45 | 2021-06-24T14:15Z | 2021-06-24T14:15:09 | CVE Published Date | updated |
| 2022-12-05 04:55:45 | 2021-06-30T19:01:06 | CVE Modified Date | updated | |
| 2022-12-05 04:55:45 | Analyzed | Vulnerability Status | updated |