CVE-2020-12387

CVSS V2 Medium 6.8 CVSS V3 High 8.1
Description
A race condition when running shutdown code for Web Worker led to a use-after-free vulnerability. This resulted in a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.
Overview
  • CVE ID
  • CVE-2020-12387
  • Assigner
  • security@mozilla.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-05-26T18:15:10
  • Last Modified Date
  • 2021-12-14T20:23:28
Weakness Enumerations
CWE URL
CWE-362 http://cwe.mitre.org/data/definitions/362.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* 1 OR 76.0
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* 1 OR 68.8.0
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* 1 OR 68.8.0
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:P/I:P/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 6.8
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8.6
  • Impact Score
  • 6.4
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • HIGH
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 8.1
  • Base Severity
  • HIGH
  • Exploitability Score
  • 2.2
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://www.mozilla.org/security/advisories/mfsa2020-17/ Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2020-18/ Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2020-16/ Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1545345 Issue Tracking Permissions Required
https://usn.ubuntu.com/4373-1/ Broken Link
https://security.gentoo.org/glsa/202005-03 Third Party Advisory
https://security.gentoo.org/glsa/202005-04 Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-12387
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12387
History
Created Old Value New Value Data Type Notes
2022-05-10 06:41:22 Added to TrackCVE
2022-12-04 16:58:40 2020-05-26T18:15Z 2020-05-26T18:15:10 CVE Published Date updated
2022-12-04 16:58:40 2021-12-14T20:23:28 CVE Modified Date updated
2022-12-04 16:58:40 Analyzed Vulnerability Status updated