IBM HTTP Server 2.0.42/2.0.47 apr-util Environment Variable denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.6$0-$5k0.00

A vulnerability was found in IBM HTTP Server 2.0.42/2.0.47 (Web Server) and classified as problematic. This issue affects an unknown part of the component apr-util. The manipulation as part of a Environment Variable leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. The summary by CVE is:

The IPv6 URI parsing routines in the apr-util library for Apache 2.0.50 and earlier allow remote attackers to cause a denial of service (child process crash) via a certain URI, as demonstrated using the Codenomicon HTTP Test Tool.

The bug was discovered 09/15/2004. The weakness was released 10/22/2004 with IBM (Website). The advisory is shared at www-1.ibm.com. The identification of this vulnerability is CVE-2004-0786 since 08/17/2004. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 14765 (Fedora Core 2 : apr-util-0.9.4-14.2 (2004-308)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l.

Upgrading to version 2.0.51 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at www-1.ibm.com. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published even before and not after the disclosure of the vulnerability. Attack attempts may be identified with Snort ID 5715. In this case the pattern |3A|/[ is used for detection. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 31460.

The vulnerability is also documented in the databases at X-Force (17382) and Tenable (14765). Entry connected to this vulnerability is available at 844.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 5.6

VulDB Base Score: 6.2
VulDB Temp Score: 5.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Denial of service
CWE: CWE-404
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Proof-of-Concept

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EPSS Percentile: 🔍

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Nessus ID: 14765
Nessus Name: Fedora Core 2 : apr-util-0.9.4-14.2 (2004-308)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
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OpenVAS ID: 52388
OpenVAS Name: FreeBSD Ports: apache
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: HTTP Server 2.0.51
Patch: www-1.ibm.com

Snort ID: 5715
Snort Message: WEB-MISC malformed ipv6 uri overflow attempt
Snort Pattern: 🔍
TippingPoint: 🔍

McAfee IPS: 🔍
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Timelineinfo

08/17/2004 🔍
09/15/2004 +29 days 🔍
09/15/2004 +0 days 🔍
09/15/2004 +0 days 🔍
09/15/2004 +0 days 🔍
09/16/2004 +0 days 🔍
09/16/2004 +0 days 🔍
09/17/2004 +1 days 🔍
09/21/2004 +4 days 🔍
10/20/2004 +29 days 🔍
10/22/2004 +2 days 🔍
10/22/2004 +0 days 🔍
10/25/2004 +3 days 🔍
06/29/2019 +5360 days 🔍

Sourcesinfo

Vendor: ibm.com

Advisory: www-1.ibm.com
Researcher: http://www.ibm.com
Organization: IBM
Status: Confirmed

CVE: CVE-2004-0786 (🔍)
OVAL: 🔍

X-Force: 17382 - Apache HTTP Server IPv6 apr_util denial of service, Medium Risk
SecurityTracker: 1011299
Vulnerability Center: 5433 - Buffer Overflow in Apache 2.0.50 and Earlier via Wrong IPv6 URI Parsing, High
SecurityFocus: 11187 - Apache Web Server Remote IPv6 Buffer Overflow Vulnerability
Secunia: 12922 - IBM HTTP Server apr-util Library and Environment Variable Expansion Vulnerabilities, Less Critical
OSVDB: 9994 - Apache HTTP Server apr-util IPV6 Parsing DoS

See also: 🔍

Entryinfo

Created: 10/25/2004 12:52
Updated: 06/29/2019 17:58
Changes: 10/25/2004 12:52 (108), 06/29/2019 17:58 (3)
Complete: 🔍

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