Apache HTTP Server up to 2.0.45 mod_dav apr_psprintf memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Apache HTTP Server up to 2.0.45. It has been declared as critical. The affected element is the function apr_psprintf of the component mod_dav. Executing a manipulation can lead to memory corruption. This vulnerability appears as CVE-2003-0245. The attack may be performed from remote. In addition, an exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Apache HTTP Server up to 2.0.45 (Web Server) and classified as critical. This vulnerability affects the function apr_psprintf of the component mod_dav. 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:

Vulnerability in the apr_psprintf function in the Apache Portable Runtime (APR) library for Apache 2.0.37 through 2.0.45 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via long strings, as demonstrated using XML objects to mod_dav, and possibly other vectors.

The weakness was presented 06/07/2003 by Joe Orton (iDefense) with iDEFENSE as confirmed advisory (CERT.org). The advisory is shared for download at kb.cert.org. This vulnerability was named CVE-2003-0245 since 05/06/2003. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 11665 (Apache 2.0.x < 2.0.46 Multiple DoS), 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 86533 (Apache 2 APR Library Denial of Service Vulnerability).

Upgrading eliminates this vulnerability. Attack attempts may be identified with Snort ID 12465. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 1614.

The vulnerability is also documented in the databases at X-Force (12090), Exploit-DB (38), Tenable (11665), SecurityFocus (BID 7723†) and OSVDB (4340†). See VDB-81 and VDB-80 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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  • end of life (old version)

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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: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 11665
Nessus Name: Apache 2.0.x < 2.0.46 Multiple DoS
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Snort ID: 12465
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

05/06/2003 🔍
05/28/2003 +22 days 🔍
05/29/2003 +1 days 🔍
06/07/2003 +9 days 🔍
06/08/2003 +0 days 🔍
06/09/2003 +1 days 🔍
10/19/2003 +132 days 🔍
03/17/2004 +150 days 🔍
08/11/2014 +3798 days 🔍
08/22/2025 +4029 days 🔍

Sourcesinfo

Vendor: apache.org

Advisory: kb.cert.org
Researcher: Joe Orton (iDefense)
Organization: iDEFENSE
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2003-0245 (🔍)
GCVE (CVE): GCVE-0-2003-0245
GCVE (VulDB): GCVE-100-20488
CERT: 🔍
X-Force: 12090
SecurityFocus: 7723 - Apache APR_PSPrintf Memory Corruption Vulnerability
OSVDB: 4340 - Apache Portable Runtime (APR) apr_psprintf DoS
Vulnerability Center: 2618 - DoS in Apache 2.0.37-2.0.45 APR Library, High

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

Entryinfo

Created: 08/12/2014 00:48
Updated: 08/22/2025 14:58
Changes: 08/12/2014 00:48 (72), 05/16/2019 09:55 (14), 09/25/2024 12:54 (15), 11/18/2024 14:39 (1), 08/22/2025 14:58 (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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