- Description
- Incorrect alias information in IonMonkey JIT compiler for setting array elements could lead to a type confusion. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Firefox ESR < 68.4.1, Thunderbird < 68.4.1, and Firefox < 72.0.1.
- Source
- security@mozilla.org
- NVD status
- Analyzed
CVSS 3.1
- Type
- Primary
- Base score
- 8.8
- Impact score
- 5.9
- Exploitability score
- 2.8
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Severity
- HIGH
CVSS 2.0
- Type
- Primary
- Base score
- 6.8
- Impact score
- 6.4
- Exploitability score
- 8.6
- Vector string
- AV:N/AC:M/Au:N/C:P/I:P/A:P
Data from CISA
- Vulnerability name
- Mozilla Firefox And Thunderbird Type Confusion Vulnerability
- Exploit added on
- Nov 3, 2021
- Exploit action due
- May 3, 2022
- Required action
- Apply updates per vendor instructions.
- Hype score
- Not currently trending
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A1EC26E6-7CBE-4386-9E43-961A21639526",
"versionEndExcluding": "68.4.1"
},
{
"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "21E5F0F7-D936-4FE0-B1F3-3A7CCDF49DEF",
"versionEndExcluding": "72.0.1"
},
{
"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "BD9C9431-2F4C-4C13-848B-0E0C6A811F47",
"versionEndExcluding": "68.4.1"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*",
"vulnerable": true,
"matchCriteriaId": "7A5301BF-1402-4BE0-A0F8-69FBE79BC6D6"
}
],
"operator": "OR"
}
]
}
]