CVE-2021-38498

CVSS V2 Medium 5 CVSS V3 High 7.5
Description
During process shutdown, a document could have caused a use-after-free of a languages service object, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2.
Overview
  • CVE ID
  • CVE-2021-38498
  • Assigner
  • security@mozilla.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-11-03T01:15:07
  • Last Modified Date
  • 2021-11-04T20:29:31
Weakness Enumerations
CWE URL
CWE-416 http://cwe.mitre.org/data/definitions/416.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* 1 OR 93.0
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* 1 OR 91.2
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* 1 OR 91.2
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://www.mozilla.org/security/advisories/mfsa2021-43/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-45/ Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1729642 Permissions Required Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-47/ Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-38498
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38498
History
Created Old Value New Value Data Type Notes
2022-05-10 06:48:16 Added to TrackCVE
2022-12-05 13:45:02 2021-11-03T01:15Z 2021-11-03T01:15:07 CVE Published Date updated
2022-12-05 13:45:02 2021-11-04T20:29:31 CVE Modified Date updated
2022-12-05 13:45:02 Analyzed Vulnerability Status updated