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Red Hat: CVE-2021-38503: CVE-2021-38503 Mozilla: iframe sandbox rules did not apply to XSLT stylesheets (Multiple Advisories)

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Red Hat: CVE-2021-38503: CVE-2021-38503 Mozilla: iframe sandbox rules did not apply to XSLT stylesheets (Multiple Advisories)

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
11/03/2021
Created
11/10/2021
Added
11/09/2021
Modified
12/15/2023

Description

The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or navigating the top-level frame. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

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

  • DSA-5026
  • DSA-5034
  • CVE-2021-38503
  • RHSA-2021:4116
  • RHSA-2021:4123
  • RHSA-2021:4130
  • RHSA-2021:4132
  • RHSA-2021:4133
  • RHSA-2021:4134
  • RHSA-2021:4605
  • RHSA-2021:4607
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