HOMEVULNERABILITIESCVE-2017-7760
HIGH

CVE-2017-7760

CWE-417Published: June 11, 2018· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2017-7760 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Microsoft1 product(s)
windows
Mozilla1 product(s)
firefox
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://bugzilla.mozilla.org/show_bug.cgi?id=1348645
PATCHhttps://bugzilla.mozilla.org/show_bug.cgi?id=1348645
ADVISORYhttp://www.securityfocus.com/bid/99057
ADVISORYhttp://www.securitytracker.com/id/1038689
ADVISORYhttps://www.mozilla.org/security/advisories/mfsa2017-15/
ADVISORYhttps://www.mozilla.org/security/advisories/mfsa2017-16/
ADVISORYhttp://www.securityfocus.com/bid/99057
ADVISORYhttp://www.securitytracker.com/id/1038689
ADVISORYhttps://www.mozilla.org/security/advisories/mfsa2017-15/
ADVISORYhttps://www.mozilla.org/security/advisories/mfsa2017-16/

All References (10)

→
http://www.securityfocus.com/bid/99057Third Party Advisory · VDB Entry
→
http://www.securitytracker.com/id/1038689Third Party Advisory · VDB Entry
→
https://bugzilla.mozilla.org/show_bug.cgi?id=1348645Exploit · Issue Tracking · Patch · Vendor Advisory
→
https://www.mozilla.org/security/advisories/mfsa2017-15/Vendor Advisory
→
https://www.mozilla.org/security/advisories/mfsa2017-16/Vendor Advisory
→
http://www.securityfocus.com/bid/99057Third Party Advisory · VDB Entry
→
http://www.securitytracker.com/id/1038689Third Party Advisory · VDB Entry
→
https://bugzilla.mozilla.org/show_bug.cgi?id=1348645Exploit · Issue Tracking · Patch · Vendor Advisory
→
https://www.mozilla.org/security/advisories/mfsa2017-15/Vendor Advisory
→
https://www.mozilla.org/security/advisories/mfsa2017-16/Vendor Advisory

Quick Facts

CVE IDCVE-2017-7760
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-417
CISA KEVNo
Affected2 vendor(s)
PublishedJun 11, 2018

Related CVEs (CWE-417)

CVE-2019-9855
9.8
CVE-2017-1000197
9.8
CVE-2017-6520
9.1
CVE-2017-3969
8.2
CVE-2018-5254
7.5
CVE-2018-14900
7.5

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2017-7760 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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