The Lenovo System Update allows least-privileged users to perform system updates. To do this, System Update includes the System Update service (SUService.exe). This service runs as the privileged SYSTEM user, creates a temporary user account with Administrator privileges, and starts a GUI application (Tvsukernel.exe) with the new Administrator account. Once the application is closed, the temporary Administrator account is appropriately deleted. However the GUI application contains links to online support and privacy help topics, which, when clicked, start a web browser instance under the temporary Administrator account to display the online topic.

As a result, an attacker who is unprivileged can exploit the web browser instance that is running as Administrator to elevate his or her own privileges to Administrator or SYSTEM. (more…)

This vulnerability allows a local unprivileged user to elevate privileges to Administrator or SYSTEM. Since the user is running the System Update is an unprivileged user, the SUService that is running as System will run the UACsdk.exe binary to create a temporary Administrator account to run the GUI application (Tvsukernel.exe). (more…)

UConnect 8.4AN/RA3/RA4 are vehicle-based infotainment systems. UConnect systems are integrated in certain makes of Chrysler, Dodge, Jeep, and Ram vehicles.

The UConnect infotainment system allowed an unauthenticated connection from other access points on the Sprint Network. An attacker could issue commands to other components within the vehicle through the infotainment system. (more…)

Local users of F-Secure Internet Security 2015 could elevate their privileges to local admin/system/kernel. (more…)

CyberLock CyberKey-based access control solutions can be easily cloned, and new keys can be created from lost cylinders and keys regardless of the permissions granted to the key. (more…)

CVE-2015-2219 Local, least-privileged users can run commands as the SYSTEM user.

CVE-2015-2233 Local and potentially remote attackers can bypass signature validation checks and replace trusted Lenovo applications with malicious applications.

CVE-2015-2234 Local, unprivileged users can run commands as an administrative user. (more…)

The security and privacy of Petcube users could be compromised through unauthorized access. (more…)

Ilja van Sprundel, an IOActive security researcher, discovered several issues in the way the libXfont library handles the responses it receives from XFS servers. Mr. van Sprundel has worked with X.Org’s security team to analyze, confirm, and fix these issues. Most of these issues stem from libXfont trusting the font server to send valid protocol data and not verifying that the values will not overflow or cause other damage.

This code is commonly called from the X server when an X Font Server is active in the font path, so it may be running in a setuid-root process, depending on the X server in use. Exploits of this path can be used by a local, authenticated user to attempt to raise privileges, or by a remote attacker who can control the font server to try to execute code with the privileges of the X server. (more…)

Attackers can steal Facebook access tokens to impersonate Facebook users and perform malicious actions that include, but are not limited to, posting content on behalf of users and accessing friend lists. (more…)

A non-privileged use could cause a local Denial-of-Service (DoS) condition by triggering a kernel panic through a malformed ELF executable. (more…)