Blue Coat K9 Web Protection HTTP version buffer overflow
| bluecoat-k9-version-bo (44124) |  High Risk |
Description:
Blue Coat K9 Web Protection is vulnerable to multiple stack-based buffer overflows in the filter service (k9filter.exe). By sending a specially-crafted HTTP response containing overly long version information, a remote attacker could exploit this vulnerability to overflow a buffer and execute arbitrary code on the system or cause the service to crash.
Note: In order to exploit this vulnerability, the attacker would need to perform DNS cache poisoning or use man-in-the-middle techniques to intercept a victim's request.
*CVSS:
| Base Score: | 5.1 |
| Access Vector: | Network |
| Access Complexity: | High |
| Authentication: | None |
| Confidentiality Impact: | Partial |
| Integrity Impact: | Partial |
| Availability Impact: | Partial |
| Temporal Score: | 4.1 |
| Exploitability: | Unproven |
| Remediation Level: | Unavailable |
| Report Confidence: | Uncorroborated |
Consequences:
Gain Access
Remedy:
No remedy available as of July 9, 2011.
References:
- Blue Coat Systems Web site: K9 Web Protection .
- Secunia Research 31/07/2008: Blue Coat K9 Web Protection Response Handling Buffer Overflow.
- BID-30463: Blue Coat K9 Web Protection 'Referer' Header Stack Based Buffer Overflow Vulnerability
- BID-30464: Blue Coat K9 Web Protection Centralized Server HTTP Responses Buffer Overflow Vulnerability
- CVE-2007-2952: Multiple stack-based buffer overflows in the filter service (aka k9filter.exe) in Blue Coat K9 Web Protection 3.2.44 with Filter 3.2.32 allow (1) remote attackers to execute arbitrary code via a long HTTP Referer header to the K9 Web Protection Administration interface and (2) man-in-the-middle attackers to execute arbitrary code via an HTTP response with a long HTTP version field.
- SA25813: Blue Coat K9 Web Protection Multiple Buffer Overflow Vulnerabilities
- SECTRACK ID: 1020587: K9 Web Protection Buffer Overflows in Processing HTTP Headers Lets Remote Users Execute Arbitrary Code
- SECTRACK ID: 1020588: K9 Web Protection Buffer Overflows in Processing HTTP Responses From the Centralized Server Lets Remote Users Execute Arbitrary Code
- VUPEN/ADV-2008-2263: Blue Coat K9 Web Protection Multiple Buffer Overflow Vulnerabilities
Platforms Affected:
- BlueCoat K9 Web Protection 3.2.44
Reported:
Jul 31, 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.