CVE-2017-7761

CVSS V2 Low 3.6 CVSS V3 Medium 5.5
Description
The Mozilla Maintenance Service "helper.exe" application creates a temporary directory writable by non-privileged users. When this is combined with creation of a junction (a form of symbolic link), protected files in the target directory of the junction can be deleted by 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.
Overview
  • CVE ID
  • CVE-2017-7761
  • Assigner
  • security@mozilla.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2018-06-11T21:29:08
  • Last Modified Date
  • 2019-10-03T00:03:26
Weakness Enumerations
CWE URL
CWE-276 http://cwe.mitre.org/data/definitions/276.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* 1 OR 54.0
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* 1 OR 52.2.0
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:N/I:P/A:P
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 3.6
  • Severity
  • LOW
  • Exploitability Score
  • 3.9
  • Impact Score
  • 4.9
CVSS Version 3
  • Version
  • 3.0
  • Vector String
  • CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 5.5
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 1.8
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://www.mozilla.org/security/advisories/mfsa2017-16/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-15/ Vendor Advisory
https://sourceforge.net/p/nsis/bugs/1125/ Issue Tracking Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1215648 Issue Tracking Vendor Advisory
http://www.securitytracker.com/id/1038689 Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/99057 Third Party Advisory VDB Entry
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2017-7761
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7761
History
Created Old Value New Value Data Type Notes
2022-05-10 17:28:08 Added to TrackCVE
2022-12-03 07:46:39 2018-06-11T21:29Z 2018-06-11T21:29:08 CVE Published Date updated
2022-12-03 07:46:39 2019-10-03T00:03:26 CVE Modified Date updated
2022-12-03 07:46:39 Analyzed Vulnerability Status updated