The client in Lenovo System Update before 3.14 does not properly validate the certificate when establishing an SSL connection, which allows remote attackers to install arbitrary packages via an SSL certificate whose X.509 headers match a public certificate used by IBM.
https://exchange.xforce.ibmcloud.com/vulnerabilities/42638
http://www.securityfocus.com/bid/29366
http://www.securityfocus.com/archive/1/492579
http://www.security-objectives.com/advisories/SECOBJADV-2008-01.txt