An execution with unnecessary privileges vulnerability in the VCM engine of FortiClient for Linux versions 6.2.7 and below, version 6.4.0. may allow local users to elevate their privileges to root by creating a malicious script or program on the target machine.

A authentication bypass using an alternate path or channel in Fortinet FortiClientWindows version 7.4.0, versions 7.2.4 through 7.2.0, versions 7.0.12 through 7.0.0, and 6.4.10 through 6.4.0 allows low privilege attacker to execute arbitrary code with high privilege via spoofed named pipe messages.

This vulnerability allows local attackers to escalate privileges on affected installations of Fortinet FortiClient Network Access Control. 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 Network Access Control service. The service loads an OpenSSL configuration file from an unsecured location. 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 Fortinet FortiClient Network Access Control. 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 Network Access Control service. The service loads an OpenSSL configuration file from an unsecured location. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.

FortiOS 6.2 running AV engine version 6.00142 and below, FortiOS 6.4 running AV engine version 6.00144 and below and FortiClient 6.2 running AV engine version 6.00137 and below may not immediately detect certain types of malformed or non-standard RAR archives, potentially containing malicious files. Based on the samples provided, FortiClient will detect the malicious files upon trying extraction by real-time scanning and FortiGate will detect the malicious archive if Virus Outbreak Prevention is enabled.

Format string vulnerability in Fortinet FortiClient 3.0.614, and possibly earlier, allows local users to execute arbitrary code via format string specifiers in the VPN connection name.

The (1) mdare6448.sys, (2) mdare3248.sys, (3) mdare3252.sys, and (4) mdare6452.sys drivers in Fortinet FortiClient before 5.2.4 allow local users to write to arbitrary memory locations via a 0x226108 ioctl call.

The (1) mdare6448.sys, (2) mdare3248.sys, (3) mdare3252.sys, (4) mdare6452.sys, and (5) Fortishield.sys drivers in Fortinet FortiClient before 5.2.4 do not properly restrict access to the API for management of processes and the Windows registry, which allows local users to obtain a privileged handle to a PID and possibly have unspecified other impact, as demonstrated by a 0x2220c8 ioctl call.

The Fortishield.sys driver in Fortinet FortiClient before 5.2.4 allows local users to execute arbitrary code with kernel privileges by setting the callback function in a (1) 0x220024 or (2) 0x220028 ioctl call.

An Improper Access Control vulnerability [CWE-284] in FortiClient Windows version 7.4.0, version 7.2.6 and below, version 7.0.13 and below may allow a local user to escalate his privileges via FortiSSLVPNd service pipe.

An Insecure Temporary File (CWE-377) vulnerability in FortiClient for Windows may allow a local user to gain elevated privileges via exhausting the pool of temporary file names combined with a symbolic link attack.

FortiClient before 4.3.5.472 on Windows, before 4.0.3.134 on Mac OS X, and before 4.0 on Android; FortiClient Lite before 4.3.4.461 on Windows; FortiClient Lite 2.0 through 2.0.0223 on Android; and FortiClient SSL VPN before 4.0.2258 on Linux proceed with an SSL session after determining that the server's X.509 certificate is invalid, which allows man-in-the-middle attackers to obtain sensitive information by leveraging a password transmission that occurs before the user warning about the certificate problem.

A Cleartext Storage of Sensitive Information vulnerability [CWE-312] in FortiClient Windows and FortiClient Linux may permit a local authenticated user to retrieve VPN password via memory dump, due to JavaScript's garbage collector

An improper neutralization of input during web page generation ('Cross-site Scripting') [CWE-79] vulnerability in FortiClient may allow the EMS administrator to send messages containing javascript code.

An insufficient verification of data authenticity vulnerability [CWE-345] in FortiClient, FortiMail and FortiOS AV engines may allow an attacker to bypass the AV engine via manipulating MIME attachment with junk and pad characters in base64.

A use of hard-coded cryptographic key (CWE-321) vulnerability in FortiClient Windows may allow a low-privileged user to decrypt interprocess communication via monitoring named pipe.

The (1) mdare6448.sys, (2) mdare3248.sys, (3) mdare3252.sys, and (4) mdare6452.sys drivers in Fortinet FortiClient before 5.2.4 allow local users to read arbitrary kernel memory via a 0x22608C ioctl call.

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Fortinet FortiClient VPN. Authentication is required to exploit this vulnerability.

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Fortinet FortiClient VPN. Authentication is required to exploit this vulnerability.