CVE-2021-43535

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Summary

CVECVE-2021-43535
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-12-08 22:15:00 UTC
Updated2022-03-17 19:58:00 UTC
DescriptionA use-after-free could have occured when an HTTP2 session object was released on a different thread, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.3, and Firefox ESR < 91.3.

Risk And Classification

Problem Types: CWE-416

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
Security Vulnerabilities fixed in Firefox 93 — Mozilla MISC www.mozilla.org
Security Vulnerabilities fixed in Thunderbird 91.3 — Mozilla MISC www.mozilla.org
Security Vulnerabilities fixed in Firefox ESR 91.3 — Mozilla MISC www.mozilla.org
Access Denied MISC bugzilla.mozilla.org
Debian -- Security Information -- DSA-5034-1 thunderbird DEBIAN www.debian.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

  • 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)
  • 180376 Debian Security Update for firefox-esr (CVE-2021-43535)
  • 198641 Ubuntu Security Notification for Thunderbird Vulnerabilities (USN-5248-1)
  • 502381 Alpine Linux Security Update for thunderbird
  • 503632 Alpine Linux Security Update for thunderbird
  • 503634 Alpine Linux Security Update for thunderbird
  • 503650 Alpine Linux Security Update for thunderbird
  • 503669 Alpine Linux Security Update for thunderbird
  • 506260 Alpine Linux Security Update for thunderbird
  • 960744 Rocky Linux Security Update for thunderbird (RLSA-2021:4130)
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