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Red Hat: CVE-2020-26973: CVE-2020-26973 Mozilla: CSS Sanitizer performed incorrect sanitization (Multiple Advisories)

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Red Hat: CVE-2020-26973: CVE-2020-26973 Mozilla: CSS Sanitizer performed incorrect sanitization (Multiple Advisories)

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
12/16/2020
Created
12/22/2020
Added
12/21/2020
Modified
12/15/2023

Description

Certain input to the CSS Sanitizer confused it, resulting in incorrect components being removed. This could have been used as a sanitizer bypass. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.

Solution(s)

  • redhat-upgrade-firefox
  • redhat-upgrade-firefox-debuginfo
  • redhat-upgrade-firefox-debugsource
  • redhat-upgrade-thunderbird
  • redhat-upgrade-thunderbird-debuginfo
  • redhat-upgrade-thunderbird-debugsource

References

  • CVE-2020-26973
  • RHSA-2020:5561
  • RHSA-2020:5562
  • RHSA-2020:5563
  • RHSA-2020:5564
  • RHSA-2020:5618
  • RHSA-2020:5622
  • RHSA-2020:5624
  • RHSA-2020:5644
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