CVE-2017-7761

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.

Affected Software

VendorProductVersion RangeStatus
MozillaFirefox ESRunspecified < 52.2affected
MozillaFirefoxunspecified < 54affected

Weaknesses

  • File deletion and privilege escalation through Mozilla Maintenance Service helper.exe application

ADP Enrichment

CVE Program Container

Additional References

References