Vulnerability Details : CVE-2017-7760
The Mozilla Windows updater modifies some files to be updated by reading the original file and applying changes to it. The location of the original file can be altered by a malicious user by passing a special path to the callback parameter through the Mozilla Maintenance Service, allowing the manipulation of files in the installation directory and privilege escalation by manipulating the Mozilla 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.
Vulnerability category: Gain privilege
Products affected by CVE-2017-7760
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-7760
0.14%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 48 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-7760
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
4.6
|
MEDIUM | AV:L/AC:L/Au:N/C:P/I:P/A:P |
3.9
|
6.4
|
NIST | |
7.8
|
HIGH | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2017-7760
-
Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-7760
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http://www.securityfocus.com/bid/99057
Mozilla Firefox Multiple Security VulnerabilitiesThird Party Advisory;VDB Entry
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https://bugzilla.mozilla.org/show_bug.cgi?id=1348645
1348645 - (CVE-2017-7760) Maintenance Service updater PatchFile file manipulationExploit;Issue Tracking;Patch;Vendor Advisory
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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
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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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