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CVE-2015-4497

10.0 · HIGH

Use-after-free vulnerability in the CanvasRenderingContext2D implementation in Mozilla Firefox before 40.0.3 and Firefox ESR 38.x before 38.2.1 allows remote attackers to execute arbitrary code by…

Published Aug 29, 2015mozillaEPSS 8.01%

Overview

CVE-2015-4497 is a high-severity vulnerability affecting mozilla firefox. It was published on August 29, 2015 and has a CVSS 2.0 base score of 10.0 (HIGH).

This vulnerability has a CVSS 2.0 base score of 10.0, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Use-after-free vulnerability in the CanvasRenderingContext2D implementation in Mozilla Firefox before 40.0.3 and Firefox ESR 38.x before 38.2.1 allows remote attackers to execute arbitrary code by leveraging improper interaction between resize events and changes to Cascading Style Sheets (CSS) token sequences for a CANVAS element.

Remediation

Check the references section for vendor advisories and patches from mozilla. Update firefox to the latest patched version. 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.

Affected products

VendorProductVersionsStatus

References

Reflists.opensuse.org/opensuse-security-announce/2015-09/msg00013.htmlReflists.opensuse.org/opensuse-security-announce/2015-11/msg00025.htmlReflists.opensuse.org/opensuse-updates/2015-09/msg00000.htmlRefrhn.redhat.com/errata/RHSA-2015-1693.htmlRefwww.debian.org/security/2015/dsa-3345Refwww.mozilla.org/security/announce/2015/mfsa2015-94.htmlRefwww.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlRefwww.securityfocus.com/bid/76502Refwww.securitytracker.com/id/1033397Refwww.ubuntu.com/usn/USN-2723-1

How CyberStrike helps

Frequently asked questions

What is CVE-2015-4497?

CVE-2015-4497 is a high-severity vulnerability affecting mozilla firefox. It was published on August 29, 2015 and has a CVSS 2.0 base score of 10.0 (HIGH).

How severe is CVE-2015-4497?

This vulnerability has a CVSS 2.0 base score of 10.0, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2015-4497?

Check the references section for vendor advisories and patches from mozilla. Update firefox to the latest patched version. 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-2015-4497?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2015-4497 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.

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