CVE-2017-7761

published 2018-06-11

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…

Priority P4 21 medium 5.5 CVSS 3.0

AV L AC L PR L UI N S U C N I H A N

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

6 ranges

Vendor	Product	Version range	Fixed in
debian	firefox	—	—
debian	firefox-esr	—	—
mozilla	firefox	< 52.2.0	52.2.0
mozilla	firefox	< 54.0	54.0
mozilla	firefox	>= unspecified < 54	54
mozilla	firefox_esr	>= unspecified < 52.2	52.2

CVSS provenance

nvd v3.0 5.5 MEDIUM CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

nvd v2.0 3.6 LOW AV:L/AC:L/Au:N/C:N/I:P/A:P

vendor_debian 5.5 LOW

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.

CWE-276