Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 55.0 |
| Microsoft | Windows | - |
Related Weaknesses (CWE)
References
- http://www.securitytracker.com/id/1039124Third Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1234401Issue TrackingPatchVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-18/Vendor Advisory
- http://www.securitytracker.com/id/1039124Third Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1234401Issue TrackingPatchVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-18/Vendor Advisory
FAQ
What is CVE-2017-7796?
CVE-2017-7796 is a vulnerability with a CVSS score of 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. The path to this file is supplied at the command line t...
How severe is CVE-2017-7796?
CVE-2017-7796 has been rated MEDIUM with a CVSS base score of 4.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-7796?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox, Microsoft Windows.