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Gentoo Linux Security Advisory GLSA 200512-02 |
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http://security.gentoo.org/ |
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Severity: High |
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Title: Webmin, Usermin: Format string vulnerability |
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Date: December 07, 2005 |
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Bugs: #113888 |
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ID: 200512-02 |
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Synopsis |
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======== |
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|
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Webmin and Usermin are vulnerable to a format string vulnerability |
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which may lead to the execution of arbitrary code. |
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|
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Background |
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========== |
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|
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Webmin is a web-based interface for Unix-like systems. Usermin is a |
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simplified version of Webmin designed for use by normal users rather |
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than system administrators. |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 app-admin/webmin < 1.250 >= 1.250 |
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2 app-admin/usermin < 1.180 >= 1.180 |
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------------------------------------------------------------------- |
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2 affected packages on all of their supported architectures. |
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------------------------------------------------------------------- |
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|
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Description |
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=========== |
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|
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Jack Louis discovered that the Webmin and Usermin "miniserv.pl" web |
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server component is vulnerable to a Perl format string vulnerability. |
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Login with the supplied username is logged via the Perl "syslog" |
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facility in an unsafe manner. |
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|
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Impact |
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====== |
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|
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A remote attacker can trigger this vulnerability via a specially |
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crafted username containing format string data. This can be exploited |
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to consume a large amount of CPU and memory resources on a vulnerable |
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system, and possibly to execute arbitrary code of the attacker's choice |
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with the permissions of the user running Webmin. |
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|
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Workaround |
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========== |
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There is no known workaround at this time. |
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Resolution |
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========== |
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All Webmin users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=app-admin/webmin-1.250" |
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|
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All Usermin users should upgrade to the latest version: |
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|
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=app-admin/usermin-1.180" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2005-3912 |
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http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3912 |
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[ 2 ] Dyad Security Advisory |
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http://www.dyadsecurity.com/webmin-0001.html |
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|
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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http://security.gentoo.org/glsa/glsa-200512-02.xml |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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http://bugs.gentoo.org. |
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|
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License |
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======= |
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Copyright 2005 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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|
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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|
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http://creativecommons.org/licenses/by-sa/2.0 |
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