fkie_cve-2020-26950
Vulnerability from fkie_nvd
Published
2020-12-09 01:15
Modified
2024-11-21 05:20
Severity ?
Summary
In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.
References
| URL | Tags | ||
|---|---|---|---|
| security@mozilla.org | http://packetstormsecurity.com/files/166175/Firefox-MCallGetProperty-Write-Side-Effects-Use-After-Free.html | Exploit, Third Party Advisory, VDB Entry | |
| security@mozilla.org | https://bugzilla.mozilla.org/show_bug.cgi?id=1675905 | Exploit, Issue Tracking, Vendor Advisory | |
| security@mozilla.org | https://www.mozilla.org/security/advisories/mfsa2020-49/ | Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | http://packetstormsecurity.com/files/166175/Firefox-MCallGetProperty-Write-Side-Effects-Use-After-Free.html | Exploit, Third Party Advisory, VDB Entry | |
| af854a3a-2127-422b-91ae-364da2661108 | https://bugzilla.mozilla.org/show_bug.cgi?id=1675905 | Exploit, Issue Tracking, Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://www.mozilla.org/security/advisories/mfsa2020-49/ | Vendor Advisory |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| mozilla | firefox | * | |
| mozilla | firefox_esr | * | |
| mozilla | thunderbird | * |
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*",
"matchCriteriaId": "7F743C78-6F4E-4BD7-A878-B887A2C42BDC",
"versionEndExcluding": "82.0.3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*",
"matchCriteriaId": "08D6779A-1193-446D-AE3E-D859D539A170",
"versionEndExcluding": "78.4.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*",
"matchCriteriaId": "635C87C4-E16B-4320-A339-45C8E1DF0401",
"versionEndExcluding": "78.4.2",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox \u003c 82.0.3, Firefox ESR \u003c 78.4.1, and Thunderbird \u003c 78.4.2."
},
{
"lang": "es",
"value": "En determinadas circunstancias, el opcode MCallGetProperty puede ser emitido con suposiciones no cumplidas, resultando en una condici\u00f3n de uso de la memoria previamente liberada explotable. Esta vulnerabilidad afecta a Firefox versiones anteriores a 82.0.3, Firefox ESR versiones anteriores a 78.4.1, y Thunderbird versiones anteriores a 78.4.2"
}
],
"id": "CVE-2020-26950",
"lastModified": "2024-11-21T05:20:33.823",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 9.3,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "COMPLETE",
"vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 10.0,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": true
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2020-12-09T01:15:12.503",
"references": [
{
"source": "security@mozilla.org",
"tags": [
"Exploit",
"Third Party Advisory",
"VDB Entry"
],
"url": "http://packetstormsecurity.com/files/166175/Firefox-MCallGetProperty-Write-Side-Effects-Use-After-Free.html"
},
{
"source": "security@mozilla.org",
"tags": [
"Exploit",
"Issue Tracking",
"Vendor Advisory"
],
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1675905"
},
{
"source": "security@mozilla.org",
"tags": [
"Vendor Advisory"
],
"url": "https://www.mozilla.org/security/advisories/mfsa2020-49/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit",
"Third Party Advisory",
"VDB Entry"
],
"url": "http://packetstormsecurity.com/files/166175/Firefox-MCallGetProperty-Write-Side-Effects-Use-After-Free.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit",
"Issue Tracking",
"Vendor Advisory"
],
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1675905"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://www.mozilla.org/security/advisories/mfsa2020-49/"
}
],
"sourceIdentifier": "security@mozilla.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-416"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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