Miloslav Trmac libuser up to 0.49 User Account cryptographic issues

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability has been found in Miloslav Trmac libuser up to 0.49 and classified as critical. Affected by this vulnerability is some unknown processing of the component User Account. The manipulation with an unknown input leads to a cryptographic issues vulnerability. The CWE definition for the vulnerability is CWE-310. As an impact it is known to affect confidentiality, and integrity. The summary by CVE is:

libuser before 0.57 uses a cleartext password value of (1) !! or (2) x for new LDAP user accounts, which makes it easier for remote attackers to obtain access by specifying one of these values.

The weakness was shared 01/13/2011 (Website). The advisory is shared at This vulnerability is known as CVE-2011-0002. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1600 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 68185 (Oracle Linux 4 / 5 / 6 : libuser (ELSA-2011-0170)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 119749 (VMware Third Party Component Updates for VMware vCenter Server, vCenter Update Manager (VMSA-2011-0013)).

Upgrading to version 0.50 eliminates this vulnerability. It is possible to mitigate the problem by adding an authentication mechanism. The best possible mitigation is suggested to be adding authentication. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (64677), Vulnerability Center (SBV-29343) and Tenable (68185). The entry 55640 is related to this item.




CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 6.5
VulDB Temp Score: 6.4
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Class: Cryptographic issues
CWE: CWE-310
ATT&CK: T1600

Local: No
Remote: Yes

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Status: Not defined

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Nessus ID: 68185
Nessus Name: Oracle Linux 4 / 5 / 6 : libuser (ELSA-2011-0170)
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OpenVAS ID: 880470
OpenVAS Name: CentOS Update for libuser CESA-2011:0170 centos4 i386
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Threat Intelligenceinfo

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Recommended: Authentication
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Upgrade: libuser 0.50


12/07/2010 🔍
01/13/2011 +37 days 🔍
01/13/2011 +0 days 🔍
01/13/2011 +0 days 🔍
01/13/2011 +0 days 🔍
01/13/2011 +0 days 🔍
01/22/2011 +8 days 🔍
01/24/2011 +2 days 🔍
07/12/2013 +900 days 🔍
03/19/2015 +615 days 🔍
10/13/2021 +2400 days 🔍


Advisory: RHSA-2011:0170
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-0002 (🔍)

X-Force: 64677
Vulnerability Center: 29343 - libuser Prior to 0.57 Cleartext Password Value Allows Remote Authentication Bypass, Medium
SecurityFocus: 45791 - libuser 'luseradd' Default Password Security Bypass Vulnerability
Secunia: 42891
OSVDB: 70421 - libuser luseradd Default Password Weakness

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Created: 03/19/2015 11:27 PM
Updated: 10/13/2021 05:40 AM
Changes: 03/19/2015 11:27 PM (70), 03/14/2017 11:45 AM (9), 10/13/2021 05:31 AM (6), 10/13/2021 05:40 AM (1)
Complete: 🔍


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