CVE-2023-4045

MEDIUM

Firefox < 116 - Origin Validation Error via Offscreen Canvas

Title source: llm

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.

References (8)

Core 8

Core References

Mailing List

https://lists.debian.org/debian-lts-announce/2023/08/msg00008.html

Issue Tracking, Permissions Required

https://bugzilla.mozilla.org/show_bug.cgi?id=1833876

Third Party Advisory

https://www.debian.org/security/2023/dsa-5464

Third Party Advisory

https://www.debian.org/security/2023/dsa-5469

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2023-29/

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2023-30/

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2023-31/

Mailing List

https://lists.debian.org/debian-lts-announce/2023/08/msg00010.html

Scores

CVSS v3 5.3

EPSS 0.0053

EPSS Percentile 40.5%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-346

Status published

Products (3)

debian/debian_linux 11.0

debian/debian_linux 12.0

mozilla/firefox < 116.0

Published Aug 01, 2023

Tracked Since Feb 18, 2026