Webmin/Usermin Session ID Spoofing Unauthenticated Access Vulnerability

BID:6915

Info

Webmin/Usermin Session ID Spoofing Unauthenticated Access Vulnerability

Bugtraq ID: 6915
Class: Input Validation Error
CVE: CVE-2003-0101
Remote: Yes
Local: No
Published: Feb 20 2003 12:00AM
Updated: Jul 11 2009 08:06PM
Credit: The discovery of this vulnerability has been credited to Keigo Yamazaki and Cintia M. Imanishi.
Vulnerable: Webmin Webmin 1.0 60
Webmin Webmin 1.0 50
Webmin Webmin 0.990
Webmin Webmin 0.970
Webmin Usermin 0.99
+ Mandriva Linux Mandrake 9.0
Webmin Usermin 0.98
+ HP Apache-Based Web Server 2.0.43 .00
 + HP Apache-Based Web Server 1.3.27 .00
 + HP Webmin-Based Admin 1.0 .01
 Webmin Usermin 0.97
+ MandrakeSoft Single Network Firewall 7.2
+ Mandriva Linux Mandrake 8.2 ppc
 + Mandriva Linux Mandrake 8.2
+ Mandriva Linux Mandrake 8.1 ia64
 + Mandriva Linux Mandrake 8.1
+ Mandriva Linux Mandrake 8.0 ppc
 + Mandriva Linux Mandrake 8.0
+ Mandriva Linux Mandrake 7.2
Webmin Usermin 0.96
Webmin Usermin 0.95
Webmin Usermin 0.94
+ Debian Linux 3.0 sparc
 + Debian Linux 3.0 s/390
 + Debian Linux 3.0 ppc
 + Debian Linux 3.0 mipsel
 + Debian Linux 3.0 mips
 + Debian Linux 3.0 m68k
 + Debian Linux 3.0 ia-64
 + Debian Linux 3.0 ia-32
 + Debian Linux 3.0 hppa
 + Debian Linux 3.0 arm
 + Debian Linux 3.0 alpha
 Webmin Usermin 0.93
Webmin Usermin 0.92
Webmin Usermin 0.91
Webmin Usermin 0.9
Webmin Usermin 0.8
Webmin Usermin 0.7
Webmin Usermin 0.6
Webmin Usermin 0.5
Webmin Usermin 0.4
SGI IRIX 6.5.19
SGI IRIX 6.5.18
SGI IRIX 6.5.17
SGI IRIX 6.5.16
SGI IRIX 6.5.15
SGI IRIX 6.5.14
SGI IRIX 6.5.13
SGI IRIX 6.5.12
SGI IRIX 6.5.11
SGI IRIX 6.5.10
SGI IRIX 6.5.9
SGI IRIX 6.5.8
SGI IRIX 6.5.7
SGI IRIX 6.5.6
SGI IRIX 6.5.5
SGI IRIX 6.5.4
SGI IRIX 6.5.3
SGI IRIX 6.5.2
SGI IRIX 6.5.1
SGI IRIX 6.5
SCO OpenLinux Workstation 3.1.1
SCO OpenLinux Server 3.1.1
HP Webmin-Based Admin 1.0 .01
- HP HP-UX 11.22
- HP HP-UX 11.20
- HP HP-UX 11.11
- HP HP-UX 11.0
HP Apache-Based Web Server 2.0.43 .00
- HP HP-UX 11.22
- HP HP-UX 11.20
- HP HP-UX 11.11
- HP HP-UX 11.0
HP Apache-Based Web Server 1.3.27 .00
- HP HP-UX 11.22
- HP HP-UX 11.20
- HP HP-UX 11.11
- HP HP-UX 11.0
EnGarde Guardian Digital WebTool 1.2
Not Vulnerable: Webmin Webmin 1.0 70
+ HP Apache-Based Web Server 1.3.27 .01
 + HP Apache-Based Web Server 1.3.27 .01
 + HP Webmin-Based Admin 1.0.1 .01
 + HP Webmin-Based Admin 1.0.1 .01
 + Turbolinux Turbolinux Server 8.0
+ Turbolinux Turbolinux Server 8.0
+ Turbolinux Turbolinux Server 7.0
+ Turbolinux Turbolinux Server 7.0
+ Turbolinux Turbolinux Workstation 8.0
Webmin Usermin 1.0
SGI IRIX 6.5.20

Discussion

Webmin/Usermin Session ID Spoofing Unauthenticated Access Vulnerability

A vulnerability has been discovered in the 'Miniserv.pl' script used to invoke both Webmin and Usermin. Due to insufficient sanitization of client-supplied BASE64 encoded input, it is possible to inject a Session ID into the access control list.

Successful exploitation of this vulnerability may allow an attacker to bypass typical authentication procedures, thus gaining adminstrative access to a webmin/usermin interface.

Exploit / POC

Webmin/Usermin Session ID Spoofing Unauthenticated Access Vulnerability

The following exploit has been made available by Carl Livitt <[email protected]>.

Solution / Fix

Webmin/Usermin Session ID Spoofing Unauthenticated Access Vulnerability

Solution:
It is recommended that all Gentoo Linux users who are running
app-admin/webmin upgrade to webmin-1.070 as follows:

emerge sync
emerge -u webmin
emerge clean

Gentoo Linux have recommended users who are running app-admin/usermin upgrade to usermin-1.000 as follows:

emerge sync
emerge -u usermin
emerge clean

EnGarde Secure Linux has released an advisory and fixes for the Digitial Guardian Webtool. Users are advise to upgrade as soon as possible.

HP has made fixes for available. See referenced advisory HPSBUX0303-250 for additional details.

SGI IRIX 6.5.x releases include the websetup package, which includes vulnerable versions of Webmin. websetup versions prior to 3.5 are prone to this issue. An updated version of websetup is available with the IRIX 6.5.20 Applications CD. Users are advised to upgrade to IRIX 6.5.20 or download a patched version of websetup from SGI.

Debian has released a security advisory (DSA 319-1) containing fixes to address this issue. Further information on how to obtain and apply fixes can be found in the attached advisory.

SCO has released an advisory (CSSA-2003-035.0) for OpenLinux that includes updates to address this issue.

The vendor has released updates which address this issue:


Webmin Usermin 0.4

Webmin Usermin 0.5

Webmin Usermin 0.6

Webmin Usermin 0.7

Webmin Usermin 0.8

Webmin Usermin 0.9

Webmin Usermin 0.91

Webmin Usermin 0.92

Webmin Usermin 0.93

Webmin Usermin 0.94

Webmin Usermin 0.95

Webmin Usermin 0.96

Webmin Usermin 0.97

Webmin Webmin 0.970

Webmin Usermin 0.98

Webmin Usermin 0.99

Webmin Webmin 1.0 50

Webmin Webmin 1.0 60

EnGarde Guardian Digital WebTool 1.2

HP Apache-Based Web Server 1.3.27 .00

SCO OpenLinux Workstation 3.1.1

SCO OpenLinux Server 3.1.1

SGI IRIX 6.5

SGI IRIX 6.5.1

SGI IRIX 6.5.10

SGI IRIX 6.5.11

SGI IRIX 6.5.12

SGI IRIX 6.5.13

SGI IRIX 6.5.14

SGI IRIX 6.5.15

SGI IRIX 6.5.16

SGI IRIX 6.5.17

SGI IRIX 6.5.18

SGI IRIX 6.5.19

SGI IRIX 6.5.2

SGI IRIX 6.5.3

SGI IRIX 6.5.4

SGI IRIX 6.5.5

SGI IRIX 6.5.6

SGI IRIX 6.5.7

SGI IRIX 6.5.8

SGI IRIX 6.5.9

References

Webmin/Usermin Session ID Spoofing Unauthenticated Access Vulnerability

References:

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report