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CVE-2017-7796

4.7 · MEDIUM

On Windows systems, the logger run by the Windows updater deletes the file "update.log" before it runs in order to write a new log of that name.

Published Jun 11, 2018CWE-20EPSS 0.28%

Overview

CVE-2017-7796 is a medium-severity vulnerability. It was published on June 11, 2018 and has a CVSS 3.0 base score of 4.7 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 4.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

On Windows systems, the logger run by the Windows updater deletes the file "update.log" before it runs in order to write a new log of that name. The path to this file is supplied at the command line to the updater and could be used in concert with another local exploit to delete a different file named "update.log" instead of the one intended. Note: This attack only affects Windows operating systems. Other operating systems are not affected. This vulnerability affects Firefox < 55.

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.securitytracker.com/id/1039124Refbugzilla.mozilla.org/show_bug.cgi?id=1234401Refwww.mozilla.org/security/advisories/mfsa2017-18/Refwww.securitytracker.com/id/1039124Refbugzilla.mozilla.org/show_bug.cgi?id=1234401Refwww.mozilla.org/security/advisories/mfsa2017-18/

How CyberStrike helps

Frequently asked questions

What is CVE-2017-7796?

CVE-2017-7796 is a medium-severity vulnerability. It was published on June 11, 2018 and has a CVSS 3.0 base score of 4.7 (MEDIUM).

How severe is CVE-2017-7796?

This vulnerability has a CVSS 3.0 base score of 4.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2017-7796?

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-2017-7796?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-7796 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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