Qpopper with PAM authentication brute force
| qpopper-pam-auth-error (7047) |  Low Risk |
Description:
A vulnerability in the authentication mechanism in Qpopper used with PAM (Pluggable Authentication Modules for Linux) on Red Hat Linux could allow a remote attacker to determine valid usernames on the system. Qpopper displays different error messages for valid and invalid usernames. If a remote attacker determines a valid username, the attacker could use brute force methods to determine the password and gain unauthorized access to the system.
Platforms Affected:
- Qualcomm, Qpopper 4.0.1
- RedHat, Linux 7
- RedHat, Linux 7.1
Remedy:
No remedy available as of July 4, 2009.
Consequences:
Obtain Information
References:
- BugTraq Mailing List, Sat Aug 25 2001 - 12:16:30 CDT, qpopper and pam.d at http://archives.neohapsis.com/archives/bugtraq/2001-08/0363.html.
- Qualcomm Web site, Qpopper Home Page at http://www.eudora.com/qpopper/.
- BID-3242: Red Hat PAM qpopper User Enumeration Vulnerability
- CVE-2001-1068: 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.
Reported:
Aug 25, 2001
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