CVE-2021-43542

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Summary

CVECVE-2021-43542
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-12-08 22:15:00 UTC
Updated2022-12-09 15:38:00 UTC
DescriptionUsing 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.

Risk And Classification

Problem Types: CWE-209

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 10.0 All All All
Operating System Debian Debian Linux 11.0 All All All
Operating System Debian Debian Linux 9.0 All All All
Application Mozilla Firefox All All All All
Application Mozilla Firefox Esr All All All All
Application Mozilla Thunderbird All All All All

References

ReferenceSourceLinkTags
Debian -- Security Information -- DSA-5026-1 firefox-esr DEBIAN www.debian.org
Mozilla Thunderbird: Multiple Vulnerabilities (GLSA 202208-14) — Gentoo security GENTOO security.gentoo.org
Access Denied MISC bugzilla.mozilla.org
Security Vulnerabilities fixed in Thunderbird 91.4.0 — Mozilla MISC www.mozilla.org
Mozilla Firefox: Multiple vulnerabilities (GLSA 202202-03) — Gentoo security GENTOO security.gentoo.org
Debian -- Security Information -- DSA-5034-1 thunderbird DEBIAN www.debian.org
Security Vulnerabilities fixed in Firefox 95 — Mozilla MISC www.mozilla.org
Security Vulnerabilities fixed in Firefox ESR 91.4.0 — Mozilla MISC www.mozilla.org
[SECURITY] [DLA 2863-1] firefox-esr security update MLIST lists.debian.org
[SECURITY] [DLA 2874-1] thunderbird security update MLIST lists.debian.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 159547 Oracle Enterprise Linux Security Update for firefox (ELSA-2021-5013)
  • 159548 Oracle Enterprise Linux Security Update for firefox (ELSA-2021-5014)
  • 159549 Oracle Enterprise Linux Security Update for thunderbird (ELSA-2021-5045)
  • 159550 Oracle Enterprise Linux Security Update for thunderbird (ELSA-2021-5046)
  • 178948 Debian Security Update for firefox-esr (DSA 5026-1)
  • 178970 Debian Security Update for firefox-esr (DLA 2863-1)
  • 178983 Debian Security Update for thunderbird (DSA 5034-1)
  • 178986 Debian Security Update for thunderbird (DLA 2874-1)
  • 179802 Debian Security Update for firefox-esr (CVE-2021-43542)
  • 198601 Ubuntu Security Notification for Firefox Vulnerabilities (USN-5186-1)
  • 198641 Ubuntu Security Notification for Thunderbird Vulnerabilities (USN-5248-1)
  • 198643 Ubuntu Security Notification for Thunderbird Vulnerabilities (USN-5246-1)
  • 239932 Red Hat Update for firefox (RHSA-2021:5014)
  • 239933 Red Hat Update for firefox (RHSA-2021:5016)
  • 239934 Red Hat Update for firefox (RHSA-2021:5015)
  • 239936 Red Hat Update for firefox (RHSA-2021:5013)
  • 239938 Red Hat Update for thunderbird (RHSA-2021:5046)
  • 239939 Red Hat Update for thunderbird (RHSA-2021:5048)
  • 239940 Red Hat Update for thunderbird (RHSA-2021:5045)
  • 239941 Red Hat Update for thunderbird (RHSA-2021:5047)
  • 257137 CentOS Security Update for firefox (CESA-2021:5014)
  • 376143 Mozilla Firefox Multiple Vulnerabilities (MFSA2021-52)
  • 376144 Mozilla Thunderbird Multiple Vulnerabilities (MFSA2021-54)
  • 376145 Mozilla Firefox ESR Multiple Vulnerabilities (MFSA2021-53)
  • 502071 Alpine Linux Security Update for firefox-esr
  • 502382 Alpine Linux Security Update for thunderbird
  • 502687 Alpine Linux Security Update for firefox
  • 505449 Alpine Linux Security Update for thunderbird
  • 710574 Gentoo Linux Mozilla Firefox Multiple Vulnerabilities (GLSA 202202-03)
  • 710585 Gentoo Linux Mozilla Thunderbird Multiple Vulnerabilities (GLSA 202208-14)
  • 751479 SUSE Enterprise Linux Security Update for MozillaFirefox (SUSE-SU-2021:3995-1)
  • 751480 SUSE Enterprise Linux Security Update for MozillaFirefox (SUSE-SU-2021:4000-1)
  • 751510 OpenSUSE Security Update for MozillaFirefox (openSUSE-SU-2021:1575-1)
  • 751515 OpenSUSE Security Update for MozillaFirefox (openSUSE-SU-2021:3993-1)
  • 751542 OpenSUSE Security Update for MozillaThunderbird (openSUSE-SU-2021:4150-1)
  • 751566 OpenSUSE Security Update for MozillaThunderbird (openSUSE-SU-2021:1635-1)
  • 940263 AlmaLinux Security Update for firefox (ALSA-2021:5013)
  • 940397 AlmaLinux Security Update for thunderbird (ALSA-2021:5045)
  • 960845 Rocky Linux Security Update for firefox (RLSA-2021:5013)
  • 960881 Rocky Linux Security Update for thunderbird (RLSA-2021:5045)
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