Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2023-6204

6.5 · MEDIUM

On some systems—depending on the graphics settings and drivers—it was possible to force an out-of-bounds read and leak memory data into the images created on the canvas element.

Published Nov 21, 2023CWE-125EPSS 0.83%

Overview

CVE-2023-6204 is a medium-severity vulnerability. It was published on November 21, 2023 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

On some systems—depending on the graphics settings and drivers—it was possible to force an out-of-bounds read and leak memory data into the images created on the canvas element. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refbugzilla.mozilla.org/show_bug.cgi?id=1841050Reflists.debian.org/debian-lts-announce/2023/11/msg00017.htmlReflists.debian.org/debian-lts-announce/2023/11/msg00030.htmlRefwww.debian.org/security/2023/dsa-5561Refwww.mozilla.org/security/advisories/mfsa2023-49/Refwww.mozilla.org/security/advisories/mfsa2023-50/Refwww.mozilla.org/security/advisories/mfsa2023-52/Refbugzilla.mozilla.org/show_bug.cgi?id=1841050Reflists.debian.org/debian-lts-announce/2023/11/msg00017.htmlReflists.debian.org/debian-lts-announce/2023/11/msg00030.html

How CyberStrike helps

Frequently asked questions

What is CVE-2023-6204?

CVE-2023-6204 is a medium-severity vulnerability. It was published on November 21, 2023 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2023-6204?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-6204?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-6204?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-6204 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related MEDIUM CVEs from 2023

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999