Sophos Anti-Virus SSDT() denial of service
| sophos-ssdt-dos (42083) |  Medium Risk |
Description:
Sophos Anti-Virus is vulnerable to a denial of service, caused by improper validation of user-supplied input when handling arguments passed to the "NtCreateKey()" System Service Descriptor Table (SSDT) function. If the Runtime Behavioural Analysis setting is enabled, a local attacker could invoke the vulnerable function with specially-crafted arguments and cause a denial of service.
*CVSS:
| Base Score: | 1.9 |
| Access Vector: | Local |
| Access Complexity: | Medium |
| Authentication: | None |
| Confidentiality Impact: | None |
| Integrity Impact: | None |
| Availability Impact: | Partial |
| Temporal Score: | 1.5 |
| Exploitability: | Unproven |
| Remediation Level: | Unavailable |
| Report Confidence: | Uncorroborated |
Consequences:
Denial of Service
Remedy:
No remedy available as of July 9, 2011.
References:
- CORE-2008-0320: Insufficient argument validation of hooked SSDT functions on multiple Antivirus and Firewalls.
- Sophos Knowledgebase Article ID: 37810: Sophos Anti-Virus for Windows 2000+, denial of service vulnerability.
- BID-28743: Sophos Anti-Virus SSDT Hooks Local Denial of Service Vulnerability
- CVE-2008-1737: Sophos Anti-Virus 7.0.5, and other 7.x versions, when Runtime Behavioural Analysis is enabled, allows local users to cause a denial of service (reboot with the product disabled) and possibly gain privileges via a zero value in a certain length field in the ObjectAttributes argument to the NtCreateKey hooked System Service Descriptor Table (SSDT) function.
- SA29996: Sophos Anti-Virus "NtCreateKey()" Hooked Function Denial of Service
- SECTRACK ID: 1019945: Sophos Anti-Virus Lets Local Users Deny Service and Potentially Gain Elevated Privileges
- VUPEN/ADV-2008-1381: Sophos Anti-Virus NtCreateKeyHook() Denial of Service Vulnerability
Platforms Affected:
- Sophos Sophos Anti-Virus 7.0.5
Reported:
Apr 28, 2008
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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.