HP Ignite-UX does not save /etc/passwd when it creates an image of a trusted system, which can set the password field to a blank and allow an attacker to gain privileges.
The PMTU discovery procedure used by HP-UX 10.30 and 11.00 for determining the optimum MTU generates large amounts of traffic in response to small packets, allowing remote attackers to cause the system to be used as a packet amplifier.
The October 1998 version of the HP-UX aserver program allows local users to gain privileges by specifying an alternate PATH which aserver uses to find the ps and grep commands.
The June 1999 version of the HP-UX aserver program allows local users to gain privileges by specifying an alternate PATH which aserver uses to find the awk command.
Multiple unknown vulnerabilities in the "r-cmnds" (1) remshd, (2) rexecd, (3) rlogind, (4) rlogin, (5) remsh, (6) rcp, (7) rexec, and (8) rdist for HP-UX 10.00 through 11.00 allow attackers to gain privileges or access files.