Description
A 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.
Published: 2021-12-08
Score: 8.8 High
EPSS: 1.2% Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-2863-1 firefox-esr security update
Debian DLA Debian DLA DLA-2874-1 thunderbird security update
Debian DSA Debian DSA DSA-5026-1 firefox-esr security update
Debian DSA Debian DSA DSA-5034-1 thunderbird security update
EUVD EUVD EUVD-2021-30464 A 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.
Ubuntu USN Ubuntu USN USN-5248-1 Thunderbird vulnerabilities
History

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Debian Debian Linux
Mozilla Firefox Firefox Esr Thunderbird
Redhat Enterprise Linux Rhel Eus
cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2024-08-04T03:55:29.311Z

Reserved: 2021-11-08T00:00:00.000Z

Link: CVE-2021-43535

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-12-08T22:15:09.517

Modified: 2024-11-21T06:29:22.570

Link: CVE-2021-43535

cve-icon Redhat

Severity : Important

Publid Date: 2021-11-02T00:00:00Z

Links: CVE-2021-43535 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses