National Cyber-Alert System

Vulnerability Summary for CVE-2003-0189

Overview

The authentication module for Apache 2.0.40 through 2.0.45 on Unix does not properly handle threads safely when using the crypt_r or crypt functions, which allows remote attackers to cause a denial of service (failed Basic authentication with valid usernames and passwords) when a threaded MPM is used.

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

Vendor Statments (disclaimer)

Official Statement from Apache (07/02/2008)

Fixed in Apache HTTP Server 2.0.46: http://httpd.apache.org/security/vulnerabilities_20.html

References to Advisories, Solutions, and Tools

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US-CERT Vulnerability Note: VU#479268

Name: VU#479268

Hyperlink:http://www.kb.cert.org/vuls/id/479268

External Source: REDHAT

Name: RHSA-2003:186

Type: Advisory; Patch Information

Hyperlink:http://www.redhat.com/support/errata/RHSA-2003-186.html

External Source: CONFIRM

Name: http://www.apache.org/dist/httpd/Announcement2.html

Type: Advisory; Patch Information

Hyperlink:http://www.apache.org/dist/httpd/Announcement2.html

External Source: BUGTRAQ

Name: 20030528 [SECURITY] [ANNOUNCE] Apache 2.0.46 released

Type: Advisory; Patch Information

Hyperlink:http://marc.theaimsgroup.com/?l=bugtraq&m=105418115512559&w=2

External Source: XF

Name: apache-aprpasswordvalidate-dos(12091)

Hyperlink:http://xforce.iss.net/xforce/xfdb/12091

External Source: BID

Name: 7725

Hyperlink:http://www.securityfocus.com/bid/7725

External Source: SECUNIA

Name: 8881

Hyperlink:http://secunia.com/advisories/8881

External Source: CONECTIVA

Name: CLA-2003:661

Hyperlink:http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000661