Sophos Anti-Virus engine (SAVi) before 3.50.1, as used in VDL 4.97G 9.7.x before 9.7.9, 10.0.x before 10.0.11, and 10.3.x before 10.3.1 does not set an ACL for certain global and session objects, which allows local users to bypass anti-virus protection, cause a denial of service (resource consumption, CPU consumption, and eventual crash) or spoof "ready for update" messages by performing certain operations on mutexes or events including (1) DataUpdateRequest, (2) MmfMutexSAV-, (3) MmfMutexSAV-Info, (4) ReadyForUpdateSAV-, (5) ReadyForUpdateSAV-Info, (6) SAV-, (7) SAV-Info, (8) StateChange, (9) SuspendedSAV-, (10) SuspendedSAV-Info, (11) UpdateComplete, (12) UpdateMutex, (13) UpdateRequest, or (14) SophosALMonSessionInstance, as demonstrated by triggering a ReadyForUpdateSAV event and modifying the UpdateComplete, UpdateMutex, and UpdateRequest objects.

The TAR file parser in Quick Heal (aka Cat QuickHeal) 11.00, Norman Antivirus 6.06.12, and Sophos Anti-Virus 4.61.0 allows remote attackers to bypass malware detection via a POSIX TAR 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 TAR parser implementations.

The ELF file parser in Bitdefender 7.2, Command Antivirus 5.2.11.5, Comodo Antivirus 7424, eSafe 7.0.17.0, F-Prot Antivirus 4.6.2.117, F-Secure Anti-Virus 9.0.16160.0, McAfee Gateway (formerly Webwasher) 2010.1C, nProtect Anti-Virus 2011-01-17.01, Sophos Anti-Virus 4.61.0, and Rising Antivirus 22.83.00.03 allows remote attackers to bypass malware detection via an ELF 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 ELF parser implementations.

The Microsoft Office file parser in Comodo Antivirus 7425 and Sophos Anti-Virus 4.61.0 allows remote attackers to bypass malware detection via an Office file with a ustar 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 Office parser implementations.

The TAR file parser in Antiy Labs AVL SDK 2.0.3.7, Quick Heal (aka Cat QuickHeal) 11.00, Jiangmin Antivirus 13.0.900, Norman Antivirus 6.06.12, PC Tools AntiVirus 7.0.3.5, and Sophos Anti-Virus 4.61.0 allows remote attackers to bypass malware detection via a POSIX TAR file with a \19\04\00\10 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 TAR parser implementations.

The TAR file parser in Quick Heal (aka Cat QuickHeal) 11.00, Norman Antivirus 6.06.12, and Sophos Anti-Virus 4.61.0 allows remote attackers to bypass malware detection via a POSIX TAR file with a \57\69\6E\5A\69\70 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 TAR parser implementations.

The ELF file parser in Bitdefender 7.2, Comodo Antivirus 7424, eSafe 7.0.17.0, F-Secure Anti-Virus 9.0.16160.0, McAfee Anti-Virus Scanning Engine 5.400.0.1158, McAfee Gateway (formerly Webwasher) 2010.1C, nProtect Anti-Virus 2011-01-17.01, Sophos Anti-Virus 4.61.0, and Rising Antivirus 22.83.00.03 allows remote attackers to bypass malware detection via an ELF file with a \19\04\00\10 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 ELF parser implementations.

The CAB file parser in Emsisoft Anti-Malware 5.1.0.1, Sophos Anti-Virus 4.61.0, and Ikarus Virus Utilities T3 Command Line Scanner 1.1.97.0 allows remote attackers to bypass malware detection via a CAB file with a modified reserved3 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.

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.

Sophos virus detection engine 2.75 on Linux and Unix, as used in Sophos Email Appliance, Pure Message for Unix, and Sophos Anti-Virus Interface (SAVI), allows remote attackers to cause a denial of service (engine crash) via zero-length MIME attachments.

The virus detection engine in Sophos Anti-Virus before 2.49.0 does not properly process malformed (1) CAB, (2) LZH, and (3) RAR files with modified headers, which might allow remote attackers to bypass malware detection.

Cross-site scripting (XSS) vulnerability in Sophos Anti-Virus for Windows 6.x before 6.5.8 and 7.x before 7.0.1 allows remote attackers to inject arbitrary web script or HTML via an archive with a file that matches a virus signature and has a crafted filename that is not properly handled by the print function in SavMain.exe.

Sophos Anti-Virus for Windows and for Unix/Linux before 2.48.0 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted UPX packed file, resulting from an "integer cast around". NOTE: as of 20070828, the vendor says this is a DoS and the researcher says this allows code execution, but the researcher is reliable.

Sophos Anti-Virus for Unix/Linux before 2.48.0 allows remote attackers to cause a denial of service (infinite loop) via a malformed BZip file that results in the creation of multiple Engine temporary files (aka a "BZip bomb").

Multiple buffer overflows in Sophos Anti-Virus scanning engine before 2.40 allow remote attackers to execute arbitrary code via (1) a SIT archive with a long filename that is not null-terminated, which triggers a heap-based overflow in veex.dll due to improper length calculation, and (2) a CPIO archive, with a long filename that is not null-terminated, which triggers a stack-based overflow in veex.dll.

Heap-based buffer overflow in Sophos Anti-Virus and Endpoint Security before 6.0.5, Anti-Virus for Linux before 5.0.10, and other platforms before 4.11, when archive scanning is enabled, allows remote attackers to trigger a denial of service (memory corruption) via a CHM file with an LZX decompression header that specifies a Windowsize of 0.

Sophos Anti-Virus and Endpoint Security before 6.0.5, Anti-Virus for Linux before 5.0.10, and other platforms before 4.11, when "Enabled scanning of archives" is set, allows remote attackers to cause a denial of service (infinite loop) via a malformed RAR archive with an Archive Header section with the headsize and packsize fields set to zero.

Sophos Anti-Virus and Endpoint Security before 6.0.5, Anti-Virus for Linux before 5.0.10, and other platforms before 4.11 allows remote attackers to cause a denial of service (memory corruption) and possibly execute arbitrary code via a malformed CHM file with a large name length in the CHM chunk header, aka "CHM name length memory consumption vulnerability."

Sophos Anti-Virus 5.1 allows remote attackers to cause a denial of service (memory consumption) via a file that is compressed with Petite and contains a large number of sections.

Multiple Sophos Anti-Virus products, including Anti-Virus for Windows 5.x before 5.2.1 and 4.x before 4.05, when cabinet file inspection is enabled, allows remote attackers to execute arbitrary code via a CAB file with "invalid folder count values," which leads to heap corruption.

Sophos Anti-Virus before 4.02, 4.5.x before 4.5.9, 4.6.x before 4.6.9, and 5.x before 5.1.4 allow remote attackers to hide arbitrary files and data via crafted ARJ archives, which are not properly scanned.

Multiple interpretation error in Sophos 3.91 with the 2.28.4 engine 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 Sophos 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.

Heap-based buffer overflow in the Sophos Antivirus Library, as used by Sophos Antivirus, PureMessage, MailMonitor, and other products, allows remote attackers to execute arbitrary code via a Visio file with a crafted sub record length.

Sophos Anti-Virus 3.93 does not check downloaded files for viruses when they have only been written, which creates a race condition and may allow remote attackers to bypass virus protection if the file is executed before the antivirus starts on system reboot.

Sophos Anti-Virus 3.78 allows remote attackers to cause a denial of service (infinite loop) via a MIME header that is not properly terminated.

Sophos Anti-Virus 3.78 allows remote attackers to bypass virus scanning by using a qmail generated Delivery Status Notification (DSN) where the original email is not included in the bounce message.