CVE-2023-23605

Memory safety bugs fixed in Firefox 109 and Firefox ESR 102.7

Published Jun 2, 2023 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Description
Mozilla developers and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 108 and Firefox ESR 102.6. 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 Firefox < 109, Firefox ESR < 102.7, and Thunderbird < 102.7.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
Debian DLA Debian DLA DLA-3275-1 firefox-esr security update
Debian DLA Debian DLA DLA-3324-1 thunderbird security update
Debian DSA Debian DSA DSA-5322-1 firefox-esr security update
Debian DSA Debian DSA DSA-5355-1 thunderbird security update
EUVD EUVD EUVD-2023-27705 Memory safety bugs present in Firefox 108 and Firefox ESR 102.6. 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 Firefox < 109, Thunderbird < 102.7, and Firefox ESR < 102.7.
Ubuntu USN Ubuntu USN USN-5816-1 Firefox vulnerabilities
Ubuntu USN Ubuntu USN USN-5824-1 Thunderbird vulnerabilities
History
Type Values Removed Values Added
Description Memory safety bugs present in Firefox 108 and Firefox ESR 102.6. 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 Firefox < 109, Thunderbird < 102.7, and Firefox ESR < 102.7. Mozilla developers and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 108 and Firefox ESR 102.6. 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 Firefox < 109, Firefox ESR < 102.7, and Thunderbird < 102.7.
Title Mozilla: Memory safety bugs fixed in Firefox 109 and Firefox ESR 102.7 Memory safety bugs fixed in Firefox 109 and Firefox ESR 102.7
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mozilla
Published
Updated
Dec 18, 2025, 3:22 PM
Reserved
Jan 16, 2023, 12:00 AM
Status
Modified
Published
Jun 2, 2023, 5:15 PM
Modified
Oct 24, 2026, 1:10 PM
Severity
Important
Public date
Jan 17, 2023, 12:00 AM