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CVE-2017-5451

4.3 · MEDIUM

A mechanism to spoof the addressbar through the user interaction on the addressbar and the "onblur" event.

Published Jun 11, 2018CWE-20EPSS 1.51%

Overview

CVE-2017-5451 is a medium-severity vulnerability. It was published on June 11, 2018 and has a CVSS 3.0 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A mechanism to spoof the addressbar through the user interaction on the addressbar and the "onblur" event. The event could be used by script to affect text display to make the loaded site appear to be different from the one actually loaded within the addressbar. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 52.1, and Firefox < 53.

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

Refwww.securityfocus.com/bid/97940Refwww.securitytracker.com/id/1038320Refaccess.redhat.com/errata/RHSA-2017:1106Refaccess.redhat.com/errata/RHSA-2017:1201Refbugzilla.mozilla.org/show_bug.cgi?id=1273537Refwww.mozilla.org/security/advisories/mfsa2017-10/Refwww.mozilla.org/security/advisories/mfsa2017-12/Refwww.mozilla.org/security/advisories/mfsa2017-13/Refwww.securityfocus.com/bid/97940Refwww.securitytracker.com/id/1038320

How CyberStrike helps

Frequently asked questions

What is CVE-2017-5451?

CVE-2017-5451 is a medium-severity vulnerability. It was published on June 11, 2018 and has a CVSS 3.0 base score of 4.3 (MEDIUM).

How severe is CVE-2017-5451?

This vulnerability has a CVSS 3.0 base score of 4.3, 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-2017-5451?

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-2017-5451?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-5451 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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