A vulnerability classified as critical was found in @stake AntiSniff 1.0.1. This vulnerability affects an unknown functionality of the component DNS Response Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Buffer overflow in L0pht AntiSniff allows remote attackers to execute arbitrary commands via a malformed DNS response packet.

The weakness was disclosed 05/15/2000 with @stake as not defined advisory (Website). The advisory is available at l0pht.com. This vulnerability was named CVE-2000-0405. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed in ANSI C and been published immediately after the advisory. It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (4459), Exploit-DB (19916), SecurityFocus (BID 1207†) and OSVDB (3179†). Once again VulDB remains the best source for vulnerability data.

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Vendor

• @stake

Name

• AntiSniff

Version

• 1.0.1

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