The TAR file parser in AhnLab V3 Internet Security 2011.01.18.00, Avira AntiVir 7.11.1.163, Antiy Labs AVL SDK 2.0.3.7, avast! Antivirus 4.8.1351.0 and 5.0.677.0, AVG Anti-Virus 10.0.0.1190, Bitdefender 7.2, Quick Heal (aka Cat QuickHeal) 11.00, ClamAV 0.96.4, Command Antivirus 5.2.11.5, Comodo Antivirus 7424, Emsisoft Anti-Malware 5.1.0.1, F-Prot Antivirus 4.6.2.117, F-Secure Anti-Virus 9.0.16160.0, Fortinet Antivirus 4.2.254.0, G Data AntiVirus 21, Ikarus Virus Utilities T3 Command Line Scanner 1.1.97.0, Jiangmin Antivirus 13.0.900, K7 AntiVirus 9.77.3565, Kaspersky Anti-Virus 7.0.0.125, McAfee Anti-Virus Scanning Engine 5.400.0.1158, McAfee Gateway (formerly Webwasher) 2010.1C, Antimalware Engine 1.1.6402.0 in Microsoft Security Essentials 2.0, NOD32 Antivirus 5795, Norman Antivirus 6.06.12, nProtect Anti-Virus 2011-01-17.01, Panda Antivirus 10.0.2.7, PC Tools AntiVirus 7.0.3.5, Rising Antivirus 22.83.00.03, Sophos Anti-Virus 4.61.0, AVEngine 20101.3.0.103 in Symantec Endpoint Prot…

The Microsoft EXE file parser in AhnLab V3 Internet Security 2011.01.18.00, Emsisoft Anti-Malware 5.1.0.1, eSafe 7.0.17.0, Ikarus Virus Utilities T3 Command Line Scanner 1.1.97.0, and Panda Antivirus 10.0.2.7 allows remote attackers to bypass malware detection via an EXE file with a \4a\46\49\46 character sequence at a certain location. NOTE: this may later be SPLIT into multiple CVEs if additional information is published showing that the error occurred independently in different EXE parser implementations.

The CAB file parser in Dr.Web 5.0.2.03300, Trend Micro HouseCall 9.120.0.1004, Kaspersky Anti-Virus 7.0.0.125, Sophos Anti-Virus 4.61.0, Trend Micro AntiVirus 9.120.0.1004, McAfee Gateway (formerly Webwasher) 2010.1C, Emsisoft Anti-Malware 5.1.0.1, CA eTrust Vet Antivirus 36.1.8511, Antiy Labs AVL SDK 2.0.3.7, Antimalware Engine 1.1.6402.0 in Microsoft Security Essentials 2.0, Rising Antivirus 22.83.00.03, Ikarus Virus Utilities T3 Command Line Scanner 1.1.97.0, Fortinet Antivirus 4.2.254.0, and Panda Antivirus 10.0.2.7 allows remote attackers to bypass malware detection via a CAB file with a modified coffFiles field. NOTE: this may later be SPLIT into multiple CVEs if additional information is published showing that the error occurred independently in different CAB parser implementations.

The Gzip file parser in AVG Anti-Virus 10.0.0.1190, Bitdefender 7.2, Command Antivirus 5.2.11.5, Emsisoft Anti-Malware 5.1.0.1, F-Secure Anti-Virus 9.0.16160.0, Fortinet Antivirus 4.2.254.0, Ikarus Virus Utilities T3 Command Line Scanner 1.1.97.0, Jiangmin Antivirus 13.0.900, K7 AntiVirus 9.77.3565, Kaspersky Anti-Virus 7.0.0.125, McAfee Anti-Virus Scanning Engine 5.400.0.1158, McAfee Gateway (formerly Webwasher) 2010.1C, NOD32 Antivirus 5795, Norman Antivirus 6.06.12, Rising Antivirus 22.83.00.03, Sophos Anti-Virus 4.61.0, AVEngine 20101.3.0.103 in Symantec Endpoint Protection 11, Trend Micro AntiVirus 9.120.0.1004, Trend Micro HouseCall 9.120.0.1004, and VBA32 3.12.14.2 allows remote attackers to bypass malware detection via a .tar.gz file with multiple compressed streams. NOTE: this may later be SPLIT into multiple CVEs if additional information is published showing that the error occurred independently in different Gzip parser implementations.

The Microsoft EXE file parser in AhnLab V3 Internet Security 2011.01.18.00, Emsisoft Anti-Malware 5.1.0.1, eSafe 7.0.17.0, Ikarus Virus Utilities T3 Command Line Scanner 1.1.97.0, and Panda Antivirus 10.0.2.7 allows remote attackers to bypass malware detection via an EXE file with a \50\4B\4C\49\54\45 character sequence at a certain location. NOTE: this may later be SPLIT into multiple CVEs if additional information is published showing that the error occurred independently in different EXE parser implementations.

Ikarus Virus Utilities T3.1.1.45.0 and possibly T3.1.1.34.0, 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.

Multiple interpretation error in Ikarus demo version allows remote attackers to bypass virus scanning via a file such as BAT, HTML, and EML with an "MZ" magic byte sequence which is normally associated with EXE, which causes the file to be treated as a safe type that could still be executed as a dangerous file type by applications on the end system, as demonstrated by a "triple headed" program that contains EXE, EML, and HTML content, aka the "magic byte bug."

Multiple interpretation error in unspecified versions of Ikarus AntiVirus allows remote attackers to bypass virus detection via a malicious executable in a specially crafted RAR file with malformed central and local headers, which can still be opened by products such as Winrar and PowerZip, even though they are rejected as corrupted by Winzip and BitZipper.