Kaspersky Anti-Virus 5.0 (5.0.712); Antivirus Personal 5.0.x; Anti-Virus 6.0 (6.0.3.837), 7 (7.0.1.325), 2009 (8.0.0.x), and 2010 (9.0.0.463); and Internet Security 7 (7.0.1.325), 2009 (8.0.0.x), and 2010 (9.0.0.463); use weak permissions (Everyone:Full Control) for the BASES directory, which allows local users to gain SYSTEM privileges by replacing an executable or DLL with a Trojan horse.

The NDIS-TDI Hooking Engine, as used in the (1) KLICK (KLICK.SYS) and (2) KLIN (KLIN.SYS) device drivers 2.0.0.281 for in Kaspersky Labs Anti-Virus 6.0.0.303 and other Anti-Virus and Internet Security products, allows local users to execute arbitrary code via crafted Irp structure with invalid addresses in the 0x80052110 IOCTL.

Kaspersky Anti-Virus for Linux Mail Servers 5.5.10 allows remote attackers to bypass virus detection by inserting invalid characters into base64 encoded content in a multipart/mixed MIME file, as demonstrated with the EICAR test file.

Kaspersky Labs Antivirus Engine 6.0 for Windows and 5.5-10 for Linux before 20070102 enter an infinite loop upon encountering an invalid NumberOfRvaAndSizes value in the Optional Windows Header of a portable executable (PE) file, which allows remote attackers to cause a denial of service (CPU consumption) by scanning a crafted PE file.

Heap-based buffer overflow in the arj.ppl module in the OnDemand Scanner in Kaspersky Anti-Virus, Anti-Virus for Workstations, and Anti-Virus for File Servers 6.0, and Internet Security 6.0 before Maintenance Pack 2 build 6.0.2.614 allows remote attackers to execute arbitrary code via crafted ARJ archives.

Kaspersky Anti-Virus 6.0 and Internet Security 6.0 exposes unsafe methods in the (a) AXKLPROD60Lib.KAV60Info (AxKLProd60.dll) and (b) AXKLSYSINFOLib.SysInfo (AxKLSysInfo.dll) ActiveX controls, which allows remote attackers to "download" or delete arbitrary files via crafted arguments to the (1) DeleteFile, (2) StartBatchUploading, (3) StartStrBatchUploading, or (4) StartUploading methods.

Kaspersky AntiVirus Engine 6.0.1.411 for Windows and 5.5-10 for Linux allows remote attackers to cause a denial of service (CPU consumption) via a crafted UPX compressed file with a negative offset, which triggers an infinite loop during decompression.

The StartUploading function in KL.SysInfo ActiveX control (AxKLSysInfo.dll) in Kaspersky Anti-Virus 6.0 and Internet Security 6.0 before Maintenance Pack 2 build 6.0.2.614 allows remote attackers to read arbitrary files by triggering an outbound anonymous FTP session that invokes the PUT command. NOTE: this issue might be related to CVE-2007-1112.

Integer overflow in the _NtSetValueKey function in klif.sys in Kaspersky Anti-Virus, Anti-Virus for Workstations, Anti-Virus for File Server 6.0, and Internet Security 6.0 before Maintenance Pack 2 build 6.0.2.614 allows context-dependent attackers to execute arbitrary code via a large, unsigned "data size argument," which results in a heap overflow.

Unspecified vulnerability in KLIF (klif.sys) in Kaspersky Anti-Virus, Anti-Virus for Workstations, and Anti-Virus for File Servers 6.0, and Internet Security 6.0 before Maintenance Pack 2 build 6.0.2.614 allows local users to gain Ring-0 privileges via unspecified vectors.

Unspecified vulnerability in the web-based product configuration system in Kaspersky Anti-Spam before 3.0 MP1 allows remote attackers to obtain access to certain directories.

Multiple format string vulnerabilities in the kavwebscan.CKAVWebScan ActiveX control (kavwebscan.dll) in Kaspersky Online Scanner before 5.0.98 allow remote attackers to execute arbitrary code via format string specifiers in "various string formatting functions," which trigger heap-based buffer overflows.

Unspecified vulnerability in Kaspersky Anti-Virus for Check Point FireWall-1 before Critical Fix 1 (5.5.161.0) might allow attackers to cause a denial of service (kernel hang) via unspecified vectors. NOTE: it is not clear whether there is an attacker role.

Kaspersky Anti-Spam 3.0 MP1 before Critical Fix 2 (3.0.278.4) sets incorrect permissions for application files in certain upgrade scenarios, which might allow local users to gain privileges.

Kaspersky Internet Security 7.0.0.125 does not properly validate certain parameters to System Service Descriptor Table (SSDT) function handlers, which allows local users to (1) cause a denial of service (crash) and possibly gain privileges via the NtCreateSection kernel SSDT hook or (2) cause a denial of service (avp.exe service outage) via the NtLoadDriver kernel SSDT hook. NOTE: this issue may partially overlap CVE-2006-3074.

Kaspersky Anti-Virus (KAV) and Internet Security 7.0 build 125 do not properly validate certain parameters to System Service Descriptor Table (SSDT) and Shadow SSDT function handlers, which allows local users to cause a denial of service (crash) via the (1) NtUserSendInput, (2) LoadLibraryA, (3) NtOpenProcess, (4) NtOpenThread, (5) NtTerminateProcess, (6) NtUserFindWindowEx, and (7) NtUserBuildHwndList kernel SSDT hooks in kylif.sys; the (8) NtDuplicateObject (DuplicateHandle) kernel SSDT hook; and possibly other kernel SSDT hooks. NOTE: the NtCreateSection vector is covered by CVE-2007-5043.1. NOTE: the vendor disputes that the DuplicateHandle vector is a vulnerability in their code, stating that "it is not an error in our code, but an obscure method for manipulating standard Windows routines to circumvent our self-defense mechanisms."

Stack-based buffer overflow in kl1.sys in Kaspersky Anti-Virus 6.0 and 7.0 and Internet Security 6.0 and 7.0 allows local users to gain privileges via an IOCTL 0x800520e8 call.

Kaspersky Internet Security Suite 2009 does not properly handle (1) multipart/mixed e-mail messages with many MIME parts and possibly (2) e-mail messages with many "Content-type: message/rfc822;" headers, which allows remote attackers to cause a denial of service (stack consumption or other resource consumption) via a large e-mail message, a related issue to CVE-2006-1173.

Buffer overflow in klim5.sys in Kaspersky Anti-Virus for Workstations 6.0 and Anti-Virus 2008 allows local users to gain privileges via an IOCTL 0x80052110 call.

Kaspersky Anti-Hacker 1.0, when configured to automatically block attacks, allows remote attackers to block IP addresses and cause a denial of service via spoofed packets.