IBM Power Hardware Management Console (HMC) 7R3.5.0 before SP4, 7R7.1.0 and 7R7.2.0 before 7R7.2.0 SP3, and 7R7.3.0 before SP2, and Systems Director Management Console (SDMC) 6R7.3.0 before SP2, does not properly restrict the VIOS viosrvcmd command, which allows local users to gain privileges via vectors involving a (1) $ (dollar sign) or (2) & (ampersand) character.
www.ibm.com/connections/blogs/PSIRT/entry/security_bulletin_power_hmc_viosrvcmd_command_allows_elevated_privilege_on_vios_cve_2012_218825
www.ibm.com/support/docview.wss?uid=isg1MB03548
www.ibm.com/support/docview.wss?uid=isg1MB03550
www.ibm.com/support/docview.wss?uid=isg1MB03554
www.ibm.com/support/docview.wss?uid=isg1MB03580
exchange.xforce.ibmcloud.com/vulnerabilities/75906