Apache HTTP Server up to 2.0.50 .htaccess memory corruption

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.0$0-$5k0.00

Summaryinfo

A vulnerability was found in Apache HTTP Server up to 2.0.50 and classified as problematic. This affects an unknown function of the component .htaccess Handler. Executing a manipulation can lead to memory corruption. The identification of this vulnerability is CVE-2004-0786. The attack needs to be done within the local network. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apache HTTP Server up to 2.0.50 (Web Server). It has been declared as critical. This vulnerability affects an unknown code of the component .htaccess Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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 weakness was shared 09/15/2004 with Swedish IT Incident Centre (Website). The advisory is shared for download at uniras.gov.uk. This vulnerability was named CVE-2004-0786 since 08/17/2004. The attack needs to be initiated within the local network. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

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. The commercial vulnerability scanner Qualys is able to test this issue with plugin 86678 (Multiple Apache Web Server Vulnerabilities prior to version 2.0.51).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at httpd.apache.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at X-Force (17382), Tenable (14765), SecurityFocus (BID 11187†), Secunia (SA12540†) and Vulnerability Center (SBV-5433†). The entries VDB-843 and VDB-941 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Support

  • end of life (old version)

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 14765
Nessus Name: Fedora Core 2 : apr-util-0.9.4-14.2 (2004-308)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 52388
OpenVAS Name: FreeBSD Ports: apache
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

ATK: 237

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: httpd.apache.org

Timelineinfo

08/17/2004 🔍
09/15/2004 +29 days 🔍
09/15/2004 +0 days 🔍
09/16/2004 +1 days 🔍
09/17/2004 +1 days 🔍
10/20/2004 +33 days 🔍
07/11/2025 +7569 days 🔍

Sourcesinfo

Vendor: apache.org

Advisory: uniras.gov.uk
Organization: Swedish IT Incident Centre
Status: Confirmed

CVE: CVE-2004-0786 (🔍)
GCVE (CVE): GCVE-0-2004-0786
GCVE (VulDB): GCVE-100-844

OVAL: 🔍

X-Force: 17382 - Apache HTTP Server IPv6 apr_util denial of service, Medium Risk
SecurityFocus: 11187 - Apache Web Server Remote IPv6 Buffer Overflow Vulnerability
Secunia: 12540 - Apache apr-util Library and Environment Variable Expansion Vulnerabilities, Moderately Critical
Vulnerability Center: 5433

See also: 🔍

Entryinfo

Created: 09/16/2004 11:39
Updated: 07/11/2025 20:45
Changes: 09/16/2004 11:39 (73), 04/16/2019 15:10 (10), 03/09/2021 19:24 (2), 06/25/2024 10:51 (16), 07/11/2025 20:45 (4)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Might our Artificial Intelligence support you?

Check our Alexa App!