637 : Apache HTTP Server UserDir Directive Username Enumeration
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
22	3742	over 9 years ago	over 3 years ago	0 times	90%

Timeline

Disclosure Date	Exploit Publish Date
2000-07-07	2000-07-07

Description

Apache web servers contain a flaw that may lead to an unauthorized information disclosure. The issue is triggered when the UserDir module is enabled and a remote attacker requests access to a user's home directory. By monitoring the web server response, an attacker is able to enumerate valid user names, resulting in a loss of confidentiality.

Classification

Location: Remote / Network Access
Attack Type: Information Disclosure
Impact: Loss of Confidentiality
Exploit: Exploit Public
Disclosure: OSVDB Verified

Solution

Currently, there are no known upgrades or patches to correct this issue. It is possible to correct the flaw by implementing the following workaround(s):

Workaround 1: Disable the default-enabled UserDir directive in httpd.conf:
UserDir Disabled

Workaround 2: Set generic error pages for 403/404 messages in httpd.conf.

Products

Apache Software Foundation

Apache HTTP Server

All

References

CVE ID: 2001-1013 (see also: NVD)
Bugtraq ID: 3335
ISS X-Force ID: 7129
Mail List Post: http://archives.neohapsis.com/archives/bugtraq/2001-09/0103.html
http://marc.theaimsgroup.com/?l=vuln-dev&m=96297636413302&w=2
http://marc.theaimsgroup.com/?l=vuln-dev&m=96297697414539&w=2
Vendor URL: http://httpd.apache.org/
Generic Exploit URL: http://packetstormsecurity.org/0407-exploits/getusr.c
Other Advisory URL: http://www.securiteam.com/unixfocus/5WP0C1F5FI.html

Tools & Filters

Nikto	38
	10766

Manual Testing Notes

Credit

Alexander A. Kelner - aksontts.debryansk.ru -
Josha Bronson - Angry Packet Security
Tobias J. Kreidl - Tobias.Kreidlnau.edu -
Heikki Korpela - hekoiki.fi -

CVSSv2 Score

CVSSv2 Base Score = 5.0
Source: nvd.nist.gov | Generated: 2003-12-31 | Disagree?

Blogs

This product uses the Daylife API but is not endorsed or certified by Daylife.

This section lists the latest news and blogs found via the daylife API (and for older items, the technorati API), which mention or otherwise discuss this vulnerability.

None found at this time

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