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CVE-2018-5152

6.5 · MEDIUM

WebExtensions with the appropriate permissions can attach content scripts to Mozilla sites such as accounts.firefox.com and listen to network traffic to the site through the "webRequest" API.

Published Jun 11, 2018CWE-327EPSS 1.63%

Overview

CVE-2018-5152 is a medium-severity vulnerability. It was published on June 11, 2018 and has a CVSS 3.0 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.0 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

WebExtensions with the appropriate permissions can attach content scripts to Mozilla sites such as accounts.firefox.com and listen to network traffic to the site through the "webRequest" API. For example, this allows for the interception of username and an encrypted password during login to Firefox Accounts. This issue does not expose synchronization traffic directly and is limited to the process of user login to the website and the data displayed to the user once logged in. This vulnerability affects Firefox < 60.

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/104139Refwww.securitytracker.com/id/1040896Refbugzilla.mozilla.org/show_bug.cgi?id=1415644Refbugzilla.mozilla.org/show_bug.cgi?id=1427289Refusn.ubuntu.com/3645-1/Refwww.mozilla.org/security/advisories/mfsa2018-11/Refwww.securityfocus.com/bid/104139Refwww.securitytracker.com/id/1040896Refbugzilla.mozilla.org/show_bug.cgi?id=1415644Refbugzilla.mozilla.org/show_bug.cgi?id=1427289

How CyberStrike helps

Frequently asked questions

What is CVE-2018-5152?

CVE-2018-5152 is a medium-severity vulnerability. It was published on June 11, 2018 and has a CVSS 3.0 base score of 6.5 (MEDIUM).

How severe is CVE-2018-5152?

This vulnerability has a CVSS 3.0 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-2018-5152?

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-2018-5152?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-5152 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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