CVE-2003-0101

Webmin/Usermin <1.070 - Auth Bypass

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2003-0101. PoCs published by Carl Livitt.

AI-analyzed exploit summary This exploit injects a fake session ID into Webmin/Usermin by sending a crafted BASE64-encoded Authorization header. It bypasses authentication by setting a known SID (1234567890) for the 'admin' user, requiring the 'passdelay' option to be enabled on the target.

Description

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.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Carl Livitt · perlremotelinux
https://www.exploit-db.com/exploits/22275

This exploit injects a fake session ID into Webmin/Usermin by sending a crafted BASE64-encoded Authorization header. It bypasses authentication by setting a known SID (1234567890) for the 'admin' user, requiring the 'passdelay' option to be enabled on the target.

Classification
Working Poc 90%
Attack Type
Auth Bypass
Complexity
Trivial
Reliability
Reliable
Target: Webmin/Usermin 1.050 - 1.060
No auth needed
Prerequisites: Target must have Webmin/Usermin 1.050-1.060 with 'passdelay' enabled · Netcat installed on attacker's system
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (17)

Core 17
Core References
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2003/dsa-319
Vendor Advisory vendor-advisory x_refsource_mandrake
http://www.mandriva.com/security/advisories?name=MDKSA-2003:025
Mailing List mailing-list x_refsource_bugtraq
http://marc.info/?l=bugtraq&m=104610336226274&w=2
Third Party Advisory, US Government Resource third-party-advisory government-resource x_refsource_ciac
http://www.ciac.org/ciac/bulletins/n-058.shtml
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/8163
Third Party Advisory vendor-advisory x_refsource_hp
http://archives.neohapsis.com/archives/hp/2003-q1/0063.html
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/8115
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id?1006160
Mailing List mailing-list x_refsource_bugtraq
http://marc.info/?l=bugtraq&m=104610300325629&w=2
Third Party Advisory vendor-advisory x_refsource_engarde
http://archives.neohapsis.com/archives/linux/engarde/2003-q1/0008.html
Mailing List mailing-list x_refsource_bugtraq
http://marc.info/?l=bugtraq&m=104610245624895&w=2
Vendor Advisory vendor-advisory x_refsource_sgi
ftp://patches.sgi.com/support/free/security/advisories/20030602-01-I
Vendor Advisory vdb-entry x_refsource_xf
http://www.iss.net/security_center/static/11390.php
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/6915

Scores

EPSS 0.1547
EPSS Percentile 96.4%

Details

Status published
Products (18)
engardelinux/guardian_digital_webtool 1.2
usermin/usermin 0.4
usermin/usermin 0.5
usermin/usermin 0.6
usermin/usermin 0.7
usermin/usermin 0.8
usermin/usermin 0.9
usermin/usermin 0.91
usermin/usermin 0.92
usermin/usermin 0.93
... and 8 more
Published Mar 03, 2003
Tracked Since Feb 18, 2026