National Vulnerability Database (NVD) National Vulnerability Database (CVE-2009-1491)

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Vulnerability Summary for CVE-2009-1491

Original release date:05/05/2009

Last revised:05/19/2009

Source: US-CERT/NIST

Overview

McAfee GroupShield for Microsoft Exchange on Exchange Server 2000, and possibly other anti-virus or anti-spam products from McAfee or other vendors, does not scan X- headers for malicious content, which allows remote attackers to bypass virus detection via a crafted message, as demonstrated by a message with an X-Testing header and no message body.

Impact

CVSS Severity (version 2.0):

CVSS v2 Base Score:9.3 (HIGH) (AV:N/AC:M/Au:N/C:C/I:C/A:C) (legend)

Impact Subscore: 10.0

Exploitability Subscore: 8.6

CVSS Version 2 Metrics:

Access Vector: Network exploitable

Access Complexity: Medium

Authentication: Not required to exploit

Impact Type:Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

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External Source: XF

Name: groupshield-xheaders-security-bypass(50354)

Hyperlink:http://xforce.iss.net/xforce/xfdb/50354

External Source: MISC

Name: http://www.nmrc.org/~thegnome/blog/apr09/

Hyperlink:http://www.nmrc.org/~thegnome/blog/apr09/