The security threat from bloatware was made abundantly clear last year with the discovery of a Lenovo bloatware vulnerability, affecting the Superfish Adware program that came pre-installed on Lenovo laptops.

Bloatware is a term used to describe software applications and programs that are largely unnecessary, yet are pre-installed on new computer and laptops. The software programs can slow down computers and take up a lot of memory, yet offer the user little in the way of benefits. They are primarily used to update application features rather than to enhance security.

Unfortunately, these pre-installed programs have been discovered – on numerous occasions – to contain security vulnerabilities that can be exploited by malicious actors and used for man-in-the-middle attacks. They can even let attackers run arbitrary code, allow privilege escalation, or perform malicious software updates.

Now a new Lenovo bloatware vulnerability has been uncovered. This time it concerns the company’s software updater which has been found to contain a vulnerability that could potentially be exploited allowing man-in-the-middle attacks to be conducted.

New Bloatware Vulnerability Found in Lenovo Accelerator Application Updater: Uninstall Recommended

The Lenovo Accelerator Application has been pre-installed on a wide range of desktop computers and notebooks shipped pre-installed with Windows 10. In total, well over 100 different models of Lenovo notebooks and desktops have the Lenovo Accelerator Application installed.  Lenovo says the application is used to speed up the launching of Lenovo applications and communicates with the company’s servers to determine whether application updates exist.

The UpdateAgent pings Lenovo’s servers every 10 minutes to check whether updates have been released. However, the application has recently been discovered to contain a security vulnerability that could be exploited by attackers.  DuoLabs investigated a number of companies to check for security vulnerabilities in pre-installed software applications and found that Lenovo’s UpdateAgent was particularly vulnerable to attacks.

DuoLabs reported that the updater had “no native security,” and that “executables and manifests are transmitted in the clear and no code-signing checks are enforced.” The security flaws could allow an attacker to intercept these communications and manipulate responses, even allowing malicious software updates to be performed.

Lenovo has responded by issuing an advisory recommending all owners of the affected devices uninstall the software application. This is a straightforward task that can be performed by accessing the Apps and Features application on a Windows 10 computer, selecting the Lenovo Accelerator Application and manually uninstalling the program.