Sophos Anti-Virus 4.33.0 input validation

Summaryinfo

A vulnerability was found in Sophos Anti-Virus 4.33.0. It has been declared as critical. The affected element is an unknown function. Executing a manipulation can lead to input validation. This vulnerability is handled as CVE-2008-5541. There is not any exploit available.

Detailsinfo

A vulnerability has been found in Sophos Anti-Virus 4.33.0 (Anti-Malware Software) and classified as very critical. This vulnerability affects some unknown processing. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Sophos Anti-Virus 4.33.0, when Internet Explorer 6 or 7 is used, allows remote attackers to bypass detection of malware in an HTML document by placing an MZ header (aka "EXE info") at the beginning, and modifying the filename to have (1) no extension, (2) a .txt extension, or (3) a .jpg extension, as demonstrated by a document containing a CVE-2006-5745 exploit.

The weakness was released 12/12/2008 (Website). The advisory is shared for download at securityfocus.com. This vulnerability was named CVE-2008-5541 since 12/12/2008. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 10/22/2018).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at X-Force (47435). Entries connected to this vulnerability are available at VDB-45443, VDB-45442, VDB-45441 and VDB-45440. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Anti-Malware Software

Vendor

• Sophos

Name

• Anti-Virus

Version

• 4.33.0

License

• commercial

Website

• Vendor: https://www.sophos.com/

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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