Heap-based buffer overflow in the Archive support module in ESET NOD32 before update 11861 allows remote attackers to execute arbitrary code via a large number of languages in an EPOC installation file of type SISFILEMULTILANG.

The ESET AV parsing engine allows virus-detection bypass via a crafted BZ2 Checksum field in an archive. This affects versions before 1294 of Smart Security Premium, Internet Security, NOD32 Antivirus, Cyber Security Pro (macOS), Cyber Security (macOS), Mobile Security for Android, Smart TV Security, and NOD32 Antivirus 4 for Linux Desktop.

ESET NOD32 Antivirus 3662 and possibly 3440, 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.

ESET Smart Security, 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.

Untrusted search path vulnerability in the installers of multiple Canon IT Solutions Inc. software programs (ESET Smart Security Premium, ESET Internet Security, ESET Smart Security, ESET NOD32 Antivirus, DESlock+ Pro, and CompuSec (all programs except packaged ones)) allows an attacker to gain privileges via a Trojan horse DLL in an unspecified directory.

Improper validation of the server’s certificate chain in secure traffic scanning feature considered intermediate certificate signed using the MD5 or SHA1 algorithm as trusted.

The vulnerability potentially allowed an attacker to misuse ESET’s file operations during the removal of a detected file on the Windows operating system to delete files without having proper permissions to do so.

Local privilege escalation potentially allowed an attacker to write an arbitrary file with fully controlled content as a privileged user.

Local privilege escalation potentially allowed an attacker to execute arbitrary code as a privileged user.

DLL Search Order Hijacking vulnerability potentially allowed an attacker with administrator privileges to load a malicious dynamic-link library and execute its code.

Planting a custom configuration file

in

ESET Inspect Connector allow load a malicious DLL.

Local privilege escalation vulnerability via insecure temporary batch file execution in ESET Management Agent

Local privilege escalation vulnerability potentially allowed an attacker to misuse ESET’s file operations to delete files without having proper permission.

ESET products for Windows allows untrusted process to impersonate the client of a pipe, which can be leveraged by attacker to escalate privileges in the context of NT AUTHORITY\SYSTEM.

ESET Antivirus and Antispyware Module module 1553 through 1560 allows a user with limited access rights to create hard links in some ESET directories and then force the product to write through these links into files that would normally not be write-able by the user, thus achieving privilege escalation.

ESET Cyber Security 6.7.900.0 for macOS allows a local attacker to execute unauthorized commands as root by abusing an undocumented feature in scheduled tasks.

Use-after-free in esetrtp kernel module used in ESET products for Linux allows potential attacker to trigger denial-of-service condition on the system.

Local privilege escalation in Windows products of ESET allows user who is logged into the system to exploit repair feature of the installer to run malicious code with higher privileges. This issue affects: ESET, spol. s r.o. ESET NOD32 Antivirus 11.2 versions prior to 15.1.12.0. ESET, spol. s r.o. ESET Internet Security 11.2 versions prior to 15.1.12.0. ESET, spol. s r.o. ESET Smart Security Premium 11.2 versions prior to 15.1.12.0. ESET, spol. s r.o. ESET Endpoint Antivirus 6.0 versions prior to 9.0.2046.0; 6.0 versions prior to 8.1.2050.0; 6.0 versions prior to 8.0.2053.0. ESET, spol. s r.o. ESET Endpoint Security 6.0 versions prior to 9.0.2046.0; 6.0 versions prior to 8.1.2050.0; 6.0 versions prior to 8.0.2053.0. ESET, spol. s r.o. ESET Server Security for Microsoft Windows Server 8.0 versions prior to 9.0.12012.0. ESET, spol. s r.o. ESET File Security for Microsoft Windows Server 8.0.12013.0. ESET, spol. s r.o. ESET Mail Security for Microsoft Exchange Server 6.0 versions prior to 8.0.10020.0. ESET, spol. s r.o. ESET Mail Security for IBM Domino 6.0 versions prior to 8.0.14011.0. ESET, spol. s r.o. ESET Security for Microsoft SharePoint Server 6.0 versions prior to 8.0.15009.0.

During internal security analysis, a local privilege escalation vulnerability has been identified. On a machine with the affected ESET product installed, it was possible for a user with lower privileges due to improper privilege management to trigger actions with root privileges.

ESET remedied this possible attack vector and has prepared new builds of its products that are no longer susceptible to this vulnerability.

The vulnerability potentially allows an attacker to misuse ESET’s file operations during the module update to delete or move files without having proper permissions.

Race condition in ESET NOD32 Antivirus before 2.2289 allows remote attackers to execute arbitrary code via a crafted CAB file, which triggers heap corruption.

ESET Archive Support Module before 1294 allows virus-detection bypass via crafted RAR Compression Information in an archive. This affects versions before 1294 of Smart Security Premium, Internet Security, NOD32 Antivirus, Cyber Security Pro (macOS), Cyber Security (macOS), Mobile Security for Android, Smart TV Security, and NOD32 Antivirus 4 for Linux Desktop.

Local privilege escalation vulnerability allowed an attacker to misuse ESET's file operations during a restore operation from quarantine.

easdrv.sys in ESET Smart Security 3.0.667.0 allows local users to cause a denial of service (crash) via a crafted IOCTL 0x222003 request to the \\.\easdrv device interface.

The Personal Firewall driver (aka epfw.sys) 3.0.672.0 and earlier in ESET Smart Security 3.0.672 and earlier allows local users to gain privileges via a crafted IRP in a certain METHODNEITHER IOCTL request to \Device\Epfw that overwrites portions of memory.

A permissions issue in ESET Cyber Security before 6.8.300.0 for macOS allows a local attacker to escalate privileges by appending data to root-owned files.

Privilege escalation vulnerability in Windows products of ESET, spol. s r.o. allows attacker to exploit "Repair" and "Uninstall" features what may lead to arbitrary file deletion. This issue affects: ESET, spol. s r.o. ESET NOD32 Antivirus 11.2 versions prior to 15.1.12.0. ESET, spol. s r.o. ESET Internet Security 11.2 versions prior to 15.1.12.0. ESET, spol. s r.o. ESET Smart Security Premium 11.2 versions prior to 15.1.12.0. ESET, spol. s r.o. ESET Endpoint Antivirus 6.0 versions prior to 9.0.2046.0. ESET, spol. s r.o. ESET Endpoint Security 6.0 versions prior to 9.0.2046.0. ESET, spol. s r.o. ESET Server Security for Microsoft Windows Server 8.0 versions prior to 9.0.12012.0. ESET, spol. s r.o. ESET File Security for Microsoft Windows Server 8.0.12013.0. ESET, spol. s r.o. ESET Mail Security for Microsoft Exchange Server 6.0 versions prior to 8.0.10020.0. ESET, spol. s r.o. ESET Mail Security for IBM Domino 6.0 versions prior to 8.0.14011.0. ESET, spol. s r.o. ESET Security for Microsoft SharePoint Server 6.0 versions prior to 8.0.15009.0.

This vulnerability allows local attackers to escalate privileges on affected installations of ESET Endpoint Antivirus. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the use of named pipes. The issue results from allowing an untrusted process to impersonate the client of a pipe. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.

This vulnerability allows local attackers to escalate privileges on affected installations of ESET Endpoint Antivirus. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the use of named pipes. The issue results from allowing an untrusted process to impersonate the client of a pipe. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.

The ESET Personal Firewall NDIS filter (EpFwNdis.sys) driver in the Firewall Module Build 1183 (20140214) and earlier in ESET Smart Security and ESET Endpoint Security products 5.0 through 7.0 allows local users to gain privileges via a crafted argument to a 0x830020CC IOCTL call.