Vulnerability Monitor

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CVE-2017-7761

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.

Published

2018-06-11T21:29:08.297

Last Modified

2024-11-21T03:32:36.553

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 5.5 (MEDIUM)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:N/I:P/A:P

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

3.9

Impact Score

4.9

Weaknesses

Type: Primary
CWE-276

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mozilla	firefox	< 54.0	Yes
Application	mozilla	firefox_esr	< 52.2.0	Yes
Operating System	microsoft	windows	-	No

References

http://www.securityfocus.com/bid/99057 Third Party Advisory, VDB Entry ([email protected])
http://www.securitytracker.com/id/1038689 Third Party Advisory, VDB Entry ([email protected])
https://bugzilla.mozilla.org/show_bug.cgi?id=1215648 Issue Tracking, Vendor Advisory ([email protected])
https://sourceforge.net/p/nsis/bugs/1125/ Issue Tracking, Third Party Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2017-15/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2017-16/ Vendor Advisory ([email protected])
http://www.securityfocus.com/bid/99057 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1038689 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.mozilla.org/show_bug.cgi?id=1215648 Issue Tracking, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://sourceforge.net/p/nsis/bugs/1125/ Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2017-15/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2017-16/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)