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If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.
Vulnerability Assessment Details
Webmin, Usermin: Multiple vulnerabilities in Usermin
Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200409-15
(Webmin, Usermin: Multiple vulnerabilities in Usermin)
There is an input validation bug in the webmail feature of Usermin.
Additionally, the Webmin and Usermin installation scripts write to
/tmp/.webmin without properly checking if it exists first.
The first vulnerability permits a remote attacker to inject arbitrary shell
code in a specially-crafted e-mail. This could lead to remote code
execution with the rights of the user running Webmin or Usermin.
The second could permit local users who know Webmin or Usermin is going to
be installed to have arbitrary files be overwritten by creating a symlink
by the name /tmp/.webmin that points to some target file, e.g. /etc/passwd.
There is no known workaround at this time.
All Usermin users should upgrade to the latest version:
# emerge sync
# emerge -pv ">=app-admin/usermin-1.090"
# emerge ">=app-admin/usermin-1.090"
All Webmin users should upgrade to the latest version:
# emerge sync
# emerge -pv ">=app-admin/webmin-1.160"
# emerge ">=app-admin/webmin-1.160"
Network Security Threat Level: Medium
Networks Security ID:
Vulnerability Assessment Copyright: (C) 2005 Michel Arboi
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