{"id":8767,"date":"2015-12-07T11:53:55","date_gmt":"2015-12-07T15:53:55","guid":{"rendered":"http:\/\/blog.nccomputertech.com\/?p=8767"},"modified":"2015-12-07T11:53:55","modified_gmt":"2015-12-07T15:53:55","slug":"security-vulnerabilities-found-in-support-software-from-lenovo-toshiba-and-dell","status":"publish","type":"post","link":"https:\/\/nccomputertech.com\/techtalk\/2015\/12\/07\/security-vulnerabilities-found-in-support-software-from-lenovo-toshiba-and-dell\/","title":{"rendered":"Security vulnerabilities found in support software from Lenovo, Toshiba, and Dell"},"content":{"rendered":"

By Lucian Constantin<\/a> | PCWorld<\/a><\/p>\n

The number of vulnerabilities discovered in technical support applications installed on PCs by manufacturers keeps piling up. New exploits have been published for flaws in Lenovo Solution Center, Toshiba Service Station and Dell System Detect.The most serious flaws appear to be in Lenovo Solution Center and could allow a malicious Web page to execute code on Lenovo Windows-based computers with system privileges.The flaws were discovered by a hacker who uses the online aliases slipstream and RoL and who released a proof-of-concept exploit<\/a> for them last week. This prompted the CERT Coordination Center at Carnegie Mellon University to publish a security advisory<\/a>.<\/p>\n

One of the issues is caused by the LSCTaskService, which is created by the Lenovo Solution Center and runs with SYSTEM privileges. This service opens an HTTP daemon on port 55555 that can receive commands. One of those commands is called RunInstaller and executes files placed in the %APPDATA%\\LSC\\Local Store folder.<\/p>\n

Any local user can write to this directory, regardless of their privilege, but the files are executed as the SYSTEM account. This means that a restricted user can exploit the logic flaw to gain full system access.<\/p>\n

Furthermore, there is a directory traversal flaw that can be exploited to trick the Lenovo Solution Center to execute code from arbitrary locations, so an attacker doesn\u2019t even need to place files in the aforementioned Local Store folder.<\/p>\n

Finally, the LSCTaskService is vulnerable to cross-site request forgery (CSRF), an attack method through which a malicious website can relay rogue requests through the user\u2019s browser. This means that, in order to exploit the previous two flaws, an attacker doesn\u2019t even need to have local access to the system where the Lenovo Solution Center is installed and can simply trick the user to visit a specially crafted Web page.<\/p>\n

In a security advisory<\/a> on its website, Lenovo said that it is currently investigating the vulnerability report and will provide a fix as soon as possible. Until then, concerned users can uninstall the Lenovo Solution Center in order to mitigate the risk, the company said.<\/p>\n