CVEvulnerability
CVE-2017-7761
5.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2018-06-11
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 5.5 MEDIUM — CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
- CVSS 2.0 ([email protected])
- 3.6 LOW — AV:L/AC:L/Au:N/C:N/I:P/A:P
- Weaknesses
- CWE-276
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.
Affected configurations
• mozilla firefox (< 52.2.0)
• mozilla firefox (< 54.0)
Related
Weakness · CWE (1)
- CWE-276 Incorrect Default Permissions weakness
References
- http://www.securityfocus.com/bid/99057 Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038689 Third Party Advisory, VDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1215648 Issue Tracking, Vendor Advisory
- https://sourceforge.net/p/nsis/bugs/1125/ Issue Tracking, Third Party 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/99057 Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038689 Third Party Advisory, VDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1215648 Issue Tracking, Vendor Advisory
- https://sourceforge.net/p/nsis/bugs/1125/ Issue Tracking, Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-15/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-16/ Vendor Advisory