Overview
- 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.
- Source
- security@mozilla.org
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 6.5
- Impact score
- 3.6
- Exploitability score
- 2.8
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- Severity
- MEDIUM
CVSS 2.0
- Type
- Primary
- Base score
- 4.3
- Impact score
- 2.9
- Exploitability score
- 8.6
- Vector string
- AV:N/AC:M/Au:N/C:N/I:N/A:P
Weaknesses
- nvd@nist.gov
- CWE-682
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:x86:*",
"vulnerable": true,
"matchCriteriaId": "93A024F9-E2A3-4F13-83A3-879EAC032592",
"versionEndExcluding": "88.0"
},
{
"criteria": "cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:x86:*",
"vulnerable": true,
"matchCriteriaId": "504327C0-E11F-4EAC-9ED3-8BEA4C40DD0C",
"versionEndExcluding": "78.10"
},
{
"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:x86:*",
"vulnerable": true,
"matchCriteriaId": "65A9C7EC-D89C-4C03-841E-9DFED53E5795",
"versionEndExcluding": "78.10"
}
],
"operator": "OR"
}
]
}
]