CWE Code: 276
Vulnerability Type: privilege_escalation
CVSS Score: 3.6
CWE Name:  Incorrect Default Permissions
Summary: 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.
Access Authentication: NONE
Access Complexity: LOW
Access Vector: LOCAL
Impact (C/I/A): NONE/PARTIAL/PARTIAL
Published Date: 2018-06-11
Last Modified Date: 2019-10-03