CVE-2008-5521

Published: Dec 12, 2008Modified: Apr 23, 2026

9.3

Vector

AV:N/AC:M/Au:N/C:C/I:C/A:C

Exploitability: 8.6 / Impact: 10.0

Source: NVD

Description

Avira AntiVir 7.9.0.36 and possibly 7.8.1.28, 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.

Affected (2)

Products: Free Av: Antivir

1 product

Configuration A

2 vulnerable · 2 platform

Vulnerable Software	Affected Versions
Free Av Antivir	Version 7.8.1.28
Free Av Antivir	Version 7.9.0.36

Running on/with	Platform Versions
Microsoft Internet Explorer	Version 6
Microsoft Internet Explorer	Version 7

Related CWEs

Improper Input Validation

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.

References (8)

http://securityreason.com/securityalert/4723

Source: cve@mitre.org

http://www.securityfocus.com/archive/1/498995/100/0/threaded

Source: cve@mitre.org

http://www.securityfocus.com/archive/1/499043/100/0/threaded

Source: cve@mitre.org

https://exchange.xforce.ibmcloud.com/vulnerabilities/47435

Source: cve@mitre.org

http://securityreason.com/securityalert/4723

Source: af854a3a-2127-422b-91ae-364da2661108

http://www.securityfocus.com/archive/1/498995/100/0/threaded

Source: af854a3a-2127-422b-91ae-364da2661108

http://www.securityfocus.com/archive/1/499043/100/0/threaded

Source: af854a3a-2127-422b-91ae-364da2661108

https://exchange.xforce.ibmcloud.com/vulnerabilities/47435

Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.