Red Hat Linux 7.0 Apache User information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Red Hat Linux 7.0. It has been declared as problematic. Impacted is an unknown function of the component Apache. The manipulation results in information disclosure (User). This vulnerability is reported as CVE-2001-1013. The attack can be launched remotely. Moreover, an exploit is present. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Red Hat Linux 7.0 (Operating System). Affected is some unknown processing of the component Apache. The manipulation with an unknown input leads to a information disclosure vulnerability (User). CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. CVE summarizes:

Apache on Red Hat Linux with with the UserDir directive enabled generates different error codes when a username exists and there is no public_html directory and when the username does not exist, which could allow remote attackers to determine valid usernames on the server.

The issue has been introduced in 09/25/2000. The weakness was disclosed 09/12/2001 by ryan (Website). The advisory is shared for download at archives.neohapsis.com. This vulnerability is traded as CVE-2001-1013. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

The exploit is shared for download at securityfocus.com. It is declared as highly functional. The vulnerability was handled as a non-public zero-day exploit for at least 352 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 10766 (Apache UserDir Directive Username Enumeration), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Web Servers and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 5001 (Discovery of Unix Account Names Vulnerability).

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (7129), Exploit-DB (21112), Tenable (10766), SecurityFocus (BID 3335†) and Vulnerability Center (SBV-1436†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: User
Class: Information disclosure / User
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 10766
Nessus Name: Apache UserDir Directive Username Enumeration
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 10766
OpenVAS Name: Apache UserDir Sensitive Information Disclosure
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: apache_userdir_enum.rb
MetaSploit Name: Apache mod_userdir User Enumeration
MetaSploit File: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/25/2000 🔍
09/12/2001 +352 days 🔍
09/12/2001 +0 days 🔍
09/12/2001 +0 days 🔍
09/12/2001 +0 days 🔍
09/18/2001 +6 days 🔍
07/15/2003 +665 days 🔍
07/08/2014 +4011 days 🔍
09/30/2025 +4102 days 🔍

Sourcesinfo

Vendor: redhat.com

Advisory: archives.neohapsis.com
Researcher: ryan
Status: Confirmed

CVE: CVE-2001-1013 (🔍)
GCVE (CVE): GCVE-0-2001-1013
GCVE (VulDB): GCVE-100-17352
X-Force: 7129
SecurityFocus: 3335 - Red Hat Linux Apache Remote Username Enumeration Vulnerability
Vulnerability Center: 1436 - Apache on Red Hat Linux Enables Username Enumeration, Medium

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 07/09/2014 01:43
Updated: 09/30/2025 11:26
Changes: 07/09/2014 01:43 (71), 05/10/2019 17:40 (9), 11/30/2024 05:50 (18), 09/30/2025 11:26 (2)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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