Security restrictions bypass in Mozilla Firefox - CVE-2017-7796

Vulnerability identifier: #VU7852

CSH Severity: Low

CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2017-7796

CWE-ID: CWE-264

Exploitation vector: Local access

Exploit availability: No public exploit available

Vendor: Mozilla

Affected software:
Mozilla Firefox

The vulnerability allows a local attacker to bypass security restrictions on the target system.

The weakness exists due to an error in Windows updater. A local attacker can cause the Windows updater to delete files named 'update.log'.

Update to version 55.0.

• https://www.mozilla.org/en-US/security/advisories/mfsa2017-18/