Multiple vulnerabilities in Lenovo System Update

Description

Multiple serious vulnerabilities have been found in Lenovo System Update. Malicious users can exploit these vulnerabilities to bypass security restrictions or gain privileges.

Below is a complete list of vulnerabilities

1. Lack of command piping restrictions can be exploited locally via named pipe manipulations;
2. Lack of file signatures verification can be exploited remotely via a specially designed executable files;
3. Lack of directory permissions restrictions can be exploited locally via a files manipulations.

Original advisories

• IOActive advisory

• Lenovo advisory

Related products

• Lenovo-System-Update

CVE list

• CVE-2015-2234
  high
• CVE-2015-2233
  critical
• CVE-2015-2219
  high

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