Kerio Personal Firewall drivers denial of service
| kerio-drivers-dos (29313) |  Medium Risk |
Description:
Kerio Personal Firewall is vulnerable to a denial of service, caused by vulnerabilities in hooked SSDT functions in the fwdrv.sys and khips.sys drivers. By sending a command that calls NtCreateFile, NtDeleteFile, NtLoadDriver, NtMapViewOfSection, NtOpenFile, or NtSetInformationFile with specially-crafted parameters, a local attacker could cause the application to crash.
*CVSS:
| Base Score: | 3.5 |
| Access Vector: | Local |
| Access Complexity: | Low |
| Authentication: | Not Required |
| Confidentiality Impact: | None |
| Integrity Impact: | None |
| Availability Impact: | Complete |
| Temporal Score: | 2.6 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Denial of Service
Remedy:
Kerio Personal Firewall customers should contact Sunbelt Software support for upgrade or patch information. See References.
References:
- Kerio ServerFirewall Web site: Kerio ServerFirewall .
- Matousec Transparent Security Advisory 2006-10-01.01: Kerio Multiple insufficient argument validation of hooked SSDT function Vulnerability.
- BID-20299: Sunbelt Kerio Personal Firewall Multiple Local Denial of Service Vulnerabilities
- CVE-2006-5153: The (1) fwdrv.sys and (2) khips.sys drivers in Sunbelt Kerio Personal Firewall 4.3.268 and earlier do not validate arguments passed through to SSDT functions, including NtCreateFile, NtDeleteFile, NtLoadDriver, NtMapViewOfSection, NtOpenFile, and NtSetInformationFile, which allows local users to cause a denial of service (crash) and possibly other impacts via unspecified vectors.
- SA22234: Kerio Personal Firewall Hooked Functions Denial of Service
- SECTRACK ID: 1016967: Sunbelt Kerio Personal Firewall Input Validation Flaws in Hooked System Calls Let Local Users Deny Service
- VUPEN/ADV-2006-3872: Kerio Personal Firewall Hooked Functions Local Denial of Service Vulnerability
Platforms Affected:
- Kerio Kerio Personal Firewall (KPF) 4.2.3.912
- Kerio Kerio Personal Firewall (KPF) 4.3.246
- Kerio Kerio Personal Firewall (KPF) 4.3.268
Reported:
Oct 01, 2006
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.
For corrections or additions please email xforce@iss.net
* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.