Incorrect signedness comparison in the ioctl handler of the atkbd keyboard driver in the FreeBSD kernel can be leveraged by a local unprivileged user to overwrite a portion of the kernel memory, thus allowing the attacker to gain root privileges on the affected system.



This update improves the checking of preconditions before launching the attack.
This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of WECON LeviStudio. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists in the handling of LeviStudio Project files. By providing an overly long HmiSet Type XML attribute, an attacker can overflow a stack-based buffer and execute arbitrary code in the context of the current process.
The AccessArray function in the VBScript engine of Internet Explorer is prone to a redefinition attack.

By accessing a VBScript array using a specially crafted object as the index, it is possible to resize the array in the middle of the AccessArray function, leaving the array in an inconsistent state, which can be abused by an attacker to execute arbitrary code on systems running vulnerable versions of Internet Explorer.