CVE-2023-4056

Mozilla: Memory safety bugs fixed in Firefox 116, Firefox ESR 115.1, Firefox ESR 102.14, Thunderbird 115.1, and Thunderbird 102.14

Published Aug 1, 2023 CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Description
Memory safety bugs present in Firefox 115, Firefox ESR 115.0, Firefox ESR 102.13, Thunderbird 115.0, and Thunderbird 102.13. 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 < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.

Analysis

No analysis available yet

Remediation

No remediation available yet

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-3521-1 thunderbird security update
Debian DLA Debian DLA DLA-3523-1 firefox-esr security update
Debian DSA Debian DSA DSA-5464-1 firefox-esr security update
Debian DSA Debian DSA DSA-5469-1 thunderbird security update
EUVD EUVD EUVD-2023-53947 Memory safety bugs present in Firefox 115, Firefox ESR 115.0, Firefox ESR 102.13, Thunderbird 115.0, and Thunderbird 102.13. 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 < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.
Ubuntu USN Ubuntu USN USN-6267-1 Firefox vulnerabilities
Ubuntu USN Ubuntu USN USN-6333-1 Thunderbird vulnerabilities
History
Type Values Removed Values Added
First Time appeared Mozilla firefox Esr
CPEs cpe:2.3:a:mozilla:firefox:-:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox_esr:-:*:*:*:*:*:*:*
Vendors & Products Mozilla firefox Esr
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
CPEs cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Vendors & Products Mozilla firefox Esr
Weaknesses
  • CWE-120

    Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

  • CWE-787

    Out-of-bounds Write

Sources

Status
PUBLISHED
Assigner
mozilla
Published
Updated
Feb 13, 2025, 5:08 PM
Reserved
Aug 1, 2023, 3:01 PM
Status
Modified
Published
Aug 1, 2023, 4:15 PM
Modified
Jun 17, 2026, 6:37 AM
Severity
Important
Public date
Aug 1, 2023, 12:00 AM