Vulnerability Description
The Firefox installer on Windows can be made to load malicious DLL files stored in the same directory as the installer when it is run. This allows privileged execution if the installer is run with elevated privileges. Note: This attack only affects Windows operating systems. Other operating systems are unaffected. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 52.2.0 |
| Mozilla | Thunderbird | < 52.2.0 |
| Microsoft | Windows | - |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/99057Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1038689Third Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1361326Issue TrackingVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-15/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-16/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-17/Vendor Advisory
- http://www.securityfocus.com/bid/99057Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1038689Third Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1361326Issue TrackingVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-15/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-16/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-17/Vendor Advisory
FAQ
What is CVE-2017-7755?
CVE-2017-7755 is a vulnerability with a CVSS score of 7.8 (HIGH). The Firefox installer on Windows can be made to load malicious DLL files stored in the same directory as the installer when it is run. This allows privileged execution if the installer is run with ele...
How severe is CVE-2017-7755?
CVE-2017-7755 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-7755?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox, Mozilla Thunderbird, Microsoft Windows.