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CVE-2017-7796 Details

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

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:4.7 MEDIUMVector:CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://bugzilla.mozilla.org/show_bug.cgi?id=1234401	CVE	Issue TrackingPatchVendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-18/	CVE	Vendor Advisory
http://www.securitytracker.com/id/1039124	CVE	Third Party AdvisoryVDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1234401	[email protected]	Issue TrackingPatchVendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-18/	[email protected]	Vendor Advisory
http://www.securitytracker.com/id/1039124	[email protected]	Third Party AdvisoryVDB Entry

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-20	Improper Input Validation	[email protected]

Affected Products

Product	Versions
mozilla firefox	< 55.0
CPE cpe:2.3:a:mozilla:firefox:::::::: Remediation No remediation found in references.
microsoft windows	All versions
CPE cpe:2.3:o:microsoft:windows:-:::::::* Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Aug 9, 2018	Initial Analysis	[email protected]
Jun 13, 2018	CVE Modified	[email protected]