Vulnerability Details : 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 category: Information leak
Products affected by CVE-2017-7768
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-7768
0.10%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 28 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-7768
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
2.1
|
LOW | AV:L/AC:L/Au:N/C:P/I:N/A:N |
3.9
|
2.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2017-7768
-
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-7768
-
http://www.securityfocus.com/bid/99057
Mozilla Firefox Multiple Security VulnerabilitiesThird Party Advisory;VDB Entry
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1336979
1336979 - (CVE-2017-7768) 32 byte arbitrary file reads as SYSTEM with maintenance serviceIssue Tracking;Vendor Advisory
-
http://www.securitytracker.com/id/1038689
Mozilla Firefox Multiple Bugs Let Remote Users Spoof URLs, Obtain Potentially Sensitive Information, and Execute Arbitrary Code and Let Local Users Gain Elevated Privileges - SecurityTrackerThird Party Advisory;VDB Entry
-
https://www.mozilla.org/security/advisories/mfsa2017-15/
Security vulnerabilities fixed in Firefox 54 — MozillaVendor Advisory
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https://www.mozilla.org/security/advisories/mfsa2017-16/
Security vulnerabilities fixed in Firefox ESR 52.2 — MozillaVendor Advisory
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