AI Score
Confidence
Low
EPSS
Percentile
69.8%
qpopper 4.01 with PAM based authentication on Red Hat systems generates different error messages when an invalid username is provided instead of a valid name, which allows remote attackers to determine valid usernames on the system.
archives.neohapsis.com/archives/bugtraq/2001-08/0363.html
www.securityfocus.com/bid/3242
exchange.xforce.ibmcloud.com/vulnerabilities/7047