CVE-2021-29967

Mozilla: Memory safety bugs fixed in Firefox 89 and Firefox ESR 78.11

Published Jun 24, 2021 CVSS 3.1 · 8.8 High EPSS 1.4% KEV · Not listed
Description
Mozilla developers reported memory safety bugs present in Firefox 88 and Firefox ESR 78.11. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 78.11, Firefox < 89, and Firefox ESR < 78.11.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-2673-1 firefox-esr security update
Debian DLA Debian DLA DLA-2679-1 thunderbird security update
Debian DSA Debian DSA DSA-4925-1 firefox-esr security update
Debian DSA Debian DSA DSA-4927-1 thunderbird security update
EUVD EUVD EUVD-2021-16426 Mozilla developers reported memory safety bugs present in Firefox 88 and Firefox ESR 78.11. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 78.11, Firefox < 89, and Firefox ESR < 78.11.
Ubuntu USN Ubuntu USN USN-4978-1 Firefox vulnerabilities
Ubuntu USN Ubuntu USN USN-4995-1 Thunderbird vulnerabilities
Ubuntu USN Ubuntu USN USN-4995-2 Thunderbird vulnerabilities
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
mozilla
Published
Updated
Aug 3, 2024, 10:24 PM
Reserved
Apr 1, 2021, 12:00 AM
Status
Modified
Published
Jun 24, 2021, 2:15 PM
Modified
Jun 17, 2026, 3:48 AM
Severity
Important
Public date
Jun 1, 2021, 12:00 AM