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CVE-2017-7760

7.8 · HIGH

The Mozilla Windows updater modifies some files to be updated by reading the original file and applying changes to it.

Published Jun 11, 2018CWE-417EPSS 0.41%

Overview

CVE-2017-7760 is a high-severity vulnerability. It was published on June 11, 2018 and has a CVSS 3.0 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.0 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

The Mozilla Windows updater modifies some files to be updated by reading the original file and applying changes to it. The location of the original file can be altered by a malicious user by passing a special path to the callback parameter through the Mozilla Maintenance Service, allowing the manipulation of files in the installation directory and privilege escalation by manipulating the Mozilla Maintenance Service, which has privileged access. Note: This attack requires local system access and only affects Windows. Other operating systems are not affected. This vulnerability affects Firefox ESR < 52.2 and Firefox < 54.

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/99057Refwww.securitytracker.com/id/1038689Refbugzilla.mozilla.org/show_bug.cgi?id=1348645Refwww.mozilla.org/security/advisories/mfsa2017-15/Refwww.mozilla.org/security/advisories/mfsa2017-16/Refwww.securityfocus.com/bid/99057Refwww.securitytracker.com/id/1038689Refbugzilla.mozilla.org/show_bug.cgi?id=1348645Refwww.mozilla.org/security/advisories/mfsa2017-15/Refwww.mozilla.org/security/advisories/mfsa2017-16/

How CyberStrike helps

Frequently asked questions

What is CVE-2017-7760?

CVE-2017-7760 is a high-severity vulnerability. It was published on June 11, 2018 and has a CVSS 3.0 base score of 7.8 (HIGH).

How severe is CVE-2017-7760?

This vulnerability has a CVSS 3.0 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2017-7760?

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-2017-7760?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-7760 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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