The FWDRV driver in Kerio Personal Firewall 4.2 and Server Firewall 1.1.1 allows local users to cause a denial of service (crash) by setting the PAGE_NOACCESS or PAGE_GUARD protection on the Page Environment Block (PEB), which triggers an exception, aka the "PEB lockout vulnerability."

Threat-Mapped Scoring

Score: 1.5

Priority: P4 - Informational (Low)

• S10 – Denial of Service

EPSS

Score: 0.00096
Percentile: 0.27766

CVSS Scoring

Affected Products

• cpe:2.3:a:kerio:personal_firewall:4.2:*:*:*:*:*:*:*
• cpe:2.3:a:kerio:serverfirewall:1.1.1:*:*:*:*:*:*:*

← Back to Home