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CVSS: 5.0EPSS: 0%CPEs: 1EXPL: 1

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. • http://archives.neohapsis.com/archives/bugtraq/2001-08/0363.html http://www.securityfocus.com/bid/3242 https://exchange.xforce.ibmcloud.com/vulnerabilities/7047 •

CVSS: 10.0EPSS: 1%CPEs: 3EXPL: 0

Buffer overflow in qpopper (aka qpop or popper) 4.0 through 4.0.2 allows remote attackers to gain privileges via a long username. • http://archives.neohapsis.com/archives/linux/caldera/2001-q3/0006.html http://marc.info/?l=vuln-dev&m=98777649031406&w=2 http://www.securityfocus.com/archive/1/188267 http://www.securityfocus.com/bid/2811 https://exchange.xforce.ibmcloud.com/vulnerabilities/6647 •