CVE-2017-7766

Description

An attack using manipulation of "updater.ini" contents, used by the Mozilla Windows Updater, and privilege escalation through the Mozilla Maintenance Service to allow for arbitrary file execution and deletion by the Maintenance Service, which has privileged access. Note: This attack requires local system access and only affects Windows. Other operating systems are not affected. This vulnerability affects Firefox ESR < 52.2 and Firefox < 54.

7.8

CVSS

Severity: High

CVSS 3.0 •

CVSS 2.0 •

EPSS 0.20%

Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org

Affected: Mozilla Firefox ESR

Affected: Mozilla Firefox

References

Link	Tags
http://www.securityfocus.com/bid/99057	vdb entry third party advisory
https://www.mozilla.org/security/advisories/mfsa2017-15/	vendor advisory
http://www.securitytracker.com/id/1038689	vdb entry third party advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1342742	issue tracking vendor advisory
https://www.mozilla.org/security/advisories/mfsa2017-16/	vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-7766?: CVE-2017-7766 has been scored as a high severity vulnerability.
How to fix CVE-2017-7766?: To fix CVE-2017-7766, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-7766 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2017-7766 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-7766?: CVE-2017-7766 affects Mozilla Firefox ESR, Mozilla Firefox.

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