CVE-2017-7761
Medium
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.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Mozilla Firefox
PublishedJun 11, 2018
First seenJun 11, 2018
How to fix
Update
- mozilla firefox52.2.0, 54.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 52.2.0, v < 54.0 | 52.2.0, 54.0 |
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