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CVE-2016-5263

8.8 · HIGH

The nsDisplayList::HitTest function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 mishandles rendering display transformation, which allows remote attackers to execute arbitrary c…

Published Aug 5, 2016CWE-704EPSS 2.25%

Overview

CVE-2016-5263 is a high-severity vulnerability. It was published on August 5, 2016 and has a CVSS 3.0 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.0 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The nsDisplayList::HitTest function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 mishandles rendering display transformation, which allows remote attackers to execute arbitrary code via a crafted web site that leverages "type confusion."

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

Reflists.opensuse.org/opensuse-security-announce/2016-08/msg00004.htmlReflists.opensuse.org/opensuse-security-announce/2016-08/msg00029.htmlRefrhn.redhat.com/errata/RHSA-2016-1551.htmlRefwww.debian.org/security/2016/dsa-3640Refwww.mozilla.org/security/announce/2016/mfsa2016-78.htmlRefwww.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.htmlRefwww.securityfocus.com/bid/92258Refwww.securitytracker.com/id/1036508Refwww.ubuntu.com/usn/USN-3044-1Refbugzilla.mozilla.org/show_bug.cgi?id=1276897

How CyberStrike helps

Frequently asked questions

What is CVE-2016-5263?

CVE-2016-5263 is a high-severity vulnerability. It was published on August 5, 2016 and has a CVSS 3.0 base score of 8.8 (HIGH).

How severe is CVE-2016-5263?

This vulnerability has a CVSS 3.0 base score of 8.8, 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-2016-5263?

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-2016-5263?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2016-5263 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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