CVE-2017-7796

Name: CVE-2017-7796
Creator: NVD / NIST
Published: 2018-06-11T21:29:09.593+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.28%

Last modified Jun 17, 2026

CVE-2017-7796 is a vulnerability of currently unknown severity. 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. EPSS estimates a 0.28% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

0.28%

19.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 55.0

References

http://www.securitytracker.com/id/1039124Third Party Advisory, VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1234401Issue Tracking, Patch, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-18/Vendor Advisory
http://www.securitytracker.com/id/1039124Third Party Advisory, VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1234401Issue Tracking, Patch, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-18/Vendor Advisory

Timeline

Published: Jun 11, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-7796?

How severe is CVE-2017-7796?

Severity scoring for CVE-2017-7796 is pending analysis. The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.

How do I fix CVE-2017-7796?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-7796?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST