Information disclosure in Microsoft Windows
CVE-2017-7768
The Mozilla Maintenance Service can be invoked by an unprivileged user to read 32 bytes of any arbitrary file on the local system by convincing the service that it is reading a status file provided by the Mozilla Windows Updater. The Mozilla Maintenance Service executes with privileged access, bypassing system protections against unprivileged users. 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.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (23.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 23.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Microsoft Windows
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
Weakness classification (CWE)
References
- www.securityfocus.com/bid/99057 (VDB Entry, Third Party Advisory, vdb-entry)
- www.mozilla.org/security/advisories/mfsa2017-15/ (Vendor Advisory)
- www.securitytracker.com/id/1038689 (VDB Entry, Third Party Advisory, vdb-entry)
- bugzilla.mozilla.org/show_bug.cgi (Issue Tracking, Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2017-16/ (Vendor Advisory)
Frequently asked questions
- What is CVE-2017-7768?
- CVE-2017-7768 is a medium-severity vulnerability in Microsoft Windows, classified under Information Disclosure. CVSS score: 5.5/10. Published 2018-06-11.
- How severe is CVE-2017-7768?
- Medium severity. CVSS v3 base score is 5.5 out of 10.