CVE-2023-4045

Mozilla: Offscreen Canvas could have bypassed cross-origin restrictions

Published Aug 1, 2023 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Description
Offscreen Canvas did not properly track cross-origin tainting, which could have been used to access image data from another site in violation of same-origin policy. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.

Remediation

No solution or workaround provided in the CVE record

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-2023-53936 Offscreen Canvas did not properly track cross-origin tainting, which could have been used to access image data from another site in violation of same-origin policy. 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
CPEs cpe:2.3:a:mozilla:firefox:-:*:*:*:*:*:*:*
Metrics ssvc

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

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

Sources

Status
PUBLISHED
Assigner
mozilla
Published
Updated
Feb 13, 2025, 5:08 PM
Reserved
Aug 1, 2023, 2:55 PM
Status
Modified
Published
Aug 1, 2023, 3:15 PM
Modified
Oct 24, 2026, 1:10 PM
Severity
Important
Public date
Aug 1, 2023, 12:00 AM