Description
Using the new logical assignment operators in a JavaScript switch statement could have caused a type confusion, leading to a memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.
Published: 2021-02-26
Score: 8.8 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-2539-1 firefox-esr security update
Debian DLA Debian DLA DLA-2541-1 thunderbird security update
Debian DSA Debian DSA DSA-4840-1 firefox-esr security update
Debian DSA Debian DSA DSA-4842-1 thunderbird security update
EUVD EUVD EUVD-2021-10875 Using the new logical assignment operators in a JavaScript switch statement could have caused a type confusion, leading to a memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.
Ubuntu USN Ubuntu USN USN-4717-1 Firefox vulnerabilities
Ubuntu USN Ubuntu USN USN-4736-1 Thunderbird vulnerabilities
History

No history.

Subscriptions

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

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2024-08-03T19:14:09.879Z

Reserved: 2021-01-13T00:00:00.000Z

Link: CVE-2021-23954

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-02-26T03:15:13.510

Modified: 2024-11-21T05:52:05.773

Link: CVE-2021-23954

cve-icon Redhat

Severity : Important

Publid Date: 2021-01-26T00:00:00Z

Links: CVE-2021-23954 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses