Vulnerability CVE-2020-12387: Information

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.

Severity: HIGH (8.1) Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

URL: https://nvd.nist.gov/vuln/detail/CVE-2020-12387
Published: May 26, 2020
Modified: Dec. 14, 2021
Error type identifier: CWE-362, CWE-416

Fixed packages

Package name
Branch
Fixed in version
Version from repository
Errata ID
Task #
State
firefoxsisyphus76.0.1-alt1127.0-alt1ALT-PU-2020-1943-1251516Fixed
firefoxp1076.0.1-alt1118.0.2-alt0.p10.1ALT-PU-2020-1943-1251516Fixed
firefoxp980.0.1-alt0.1.p9105.0.1-alt0.c9.1ALT-PU-2020-3442-1262506Fixed
firefoxc10f176.0.1-alt1112.0.2-alt0.p10.1ALT-PU-2020-1943-1251516Fixed
firefoxc9f293.0-alt0.p9.1105.0.1-alt0.c9.1ALT-PU-2021-3368-1288792Fixed
firefoxp1176.0.1-alt1126.0.1-alt1ALT-PU-2020-1943-1251516Fixed
firefox-esrsisyphus68.8.0-alt1115.11.0-alt1ALT-PU-2020-1915-1251192Fixed
firefox-esrp1068.8.0-alt1115.11.0-alt1ALT-PU-2020-1915-1251192Fixed
firefox-esrp968.8.0-alt1102.11.0-alt0.c9.1ALT-PU-2020-1932-1251193Fixed
firefox-esrc10f168.8.0-alt1115.9.1-alt0.c10.1ALT-PU-2020-1915-1251192Fixed
firefox-esrc9f278.7.1-alt0.1.c9102.12.0-alt0.c9.1ALT-PU-2021-1368-1264611Fixed
firefox-esrp1168.8.0-alt1115.11.0-alt1ALT-PU-2020-1915-1251192Fixed
thunderbirdsisyphus68.8.0-alt1115.9.0-alt1ALT-PU-2020-1916-1251196Fixed
thunderbirdp1068.8.0-alt1115.9.0-alt1ALT-PU-2020-1916-1251196Fixed
thunderbirdp968.8.0-alt2102.11.0-alt0.c9.1ALT-PU-2020-1933-1251220Fixed
thunderbirdc10f168.8.0-alt1115.9.0-alt0.c10.1ALT-PU-2020-1916-1251196Fixed
thunderbirdc9f268.8.0-alt2102.11.0-alt0.c9.1ALT-PU-2020-1933-1251220Fixed
thunderbirdp1168.8.0-alt1115.9.0-alt1ALT-PU-2020-1916-1251196Fixed

References to Advisories, Solutions, and Tools

Hyperlink
Resource
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
USN-4373-1
  • Broken Link
https://security.gentoo.org/glsa/202005-03
  • Third Party Advisory
https://security.gentoo.org/glsa/202005-04
  • Third Party Advisory

    1. Configuration 1

      cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
      End excliding
      68.8.0
      cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
      End excliding
      76.0
      cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
      End excliding
      68.8.0
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