Format string vulnerability in miniserv.pl Perl web server in Webmin before 1.250 and Usermin before 1.180, with syslog logging enabled, allows remote attackers to cause a denial of service (crash or memory consumption) and possibly execute arbitrary code via format string specifiers in the username parameter to the login form, which is ultimately used in a syslog call. NOTE: the code execution might be associated with an issue in Perl.

miniserv.pl in Webmin before 1.230 and Usermin before 1.160, when "full PAM conversations" is enabled, allows remote attackers to bypass authentication by spoofing session IDs via certain metacharacters (line feed or carriage return).

The ebuild of Webmin before 1.170-r3 on Gentoo Linux includes the encrypted root password in the miniserv.users file when building a tbz2 of the webmin package, which allows remote attackers to obtain and possibly crack the encrypted password.

Unknown vulnerability in (1) Webmin and (2) Usermin before 1.200 causes Webmin to change permissions and ownership of configuration files, with unknown impact.

The web mail functionality in Usermin 1.x and Webmin 1.x allows remote attackers to execute arbitrary commands via shell metacharacters in an e-mail message.

The maketemp.pl script in Usermin 1.070 and 1.080 allows local users to overwrite arbitrary files at install time via a symlink attack on the /tmp/.usermin directory.

The account lockout functionality in (1) Webmin 1.140 and (2) Usermin 1.070 does not parse certain character strings, which allows remote attackers to conduct a brute force attack to guess user IDs and passwords.

Unknown vulnerability in Webmin 1.140 allows remote attackers to bypass access control rules and gain read access to configuration information for a module.

miniserv.pl in (1) Webmin before 1.070 and (2) Usermin before 1.000 does not properly handle metacharacters such as line feeds and carriage returns (CRLF) in Base-64 encoded strings during Basic authentication, which allows remote attackers to spoof a session ID and gain root privileges.

The web interface for Webmin 0.92 does not properly quote or filter script code in files that are displayed to the interface, which allows local users to execute script and possibly steal cookies by inserting the script into certain files or fields, such as a real user name entry in the passwd file.