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CVE-2016-5265

5.5 · MEDIUM

Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allow user-assisted remote attackers to bypass the Same Origin Policy, and conduct Universal XSS (UXSS) attacks or read arbitrary files,…

Published Aug 5, 2016CWE-79EPSS 1.25%

Overview

CVE-2016-5265 is a medium-severity vulnerability. It was published on August 5, 2016 and has a CVSS 3.0 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allow user-assisted remote attackers to bypass the Same Origin Policy, and conduct Universal XSS (UXSS) attacks or read arbitrary files, by arranging for the presence of a crafted HTML document and a crafted shortcut file in the same local directory.

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/mfsa2016-80.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=1278013

How CyberStrike helps

Frequently asked questions

What is CVE-2016-5265?

CVE-2016-5265 is a medium-severity vulnerability. It was published on August 5, 2016 and has a CVSS 3.0 base score of 5.5 (MEDIUM).

How severe is CVE-2016-5265?

This vulnerability has a CVSS 3.0 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2016-5265?

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-2016-5265?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2016-5265 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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