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Red Hat: CVE-2021-43542: XMLHttpRequest error codes could have leaked the existence of an external protocol handler (Multiple Advisories)

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Red Hat: CVE-2021-43542: XMLHttpRequest error codes could have leaked the existence of an external protocol handler (Multiple Advisories)

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:P/I:N/A:N)
Published
12/08/2021
Created
12/13/2021
Added
12/09/2021
Modified
12/15/2023

Description

Using XMLHttpRequest, an attacker could have identified installed applications by probing error messages for loading external protocols. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.

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-2021-43542
  • RHSA-2021:5013
  • RHSA-2021:5014
  • RHSA-2021:5015
  • RHSA-2021:5016
  • RHSA-2021:5045
  • RHSA-2021:5046
  • RHSA-2021:5047
  • RHSA-2021:5048
View more

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