Apache HTTP Server up to 2.4.4 mod_dav mod_dav.c Request access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.7$0-$5k0.00

A vulnerability was found in Apache HTTP Server up to 2.4.4 (Web Server). It has been declared as critical. Affected by this vulnerability is some unknown processing of the file mod_dav.c of the component mod_dav. The manipulation as part of a Request leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect availability. The summary by CVE is:

mod_dav.c in the Apache HTTP Server before 2.2.25 does not properly determine whether DAV is enabled for a URI, which allows remote attackers to cause a denial of service (segmentation fault) via a MERGE request in which the URI is configured for handling by the mod_dav_svn module, but a certain href attribute in XML data refers to a non-DAV URI.

The weakness was presented 05/23/2012 by Ben Riser as confirmed advisory (Apache SVN). The advisory is shared at svn.apache.org. This vulnerability is known as CVE-2013-1896 since 02/19/2013. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known. MITRE ATT&CK project uses the attack technique T1068 for this issue.

After immediately, there has been an exploit disclosed. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 69342 , which helps to determine the existence of the flaw in a target environment. It is . The commercial vulnerability scanner Qualys is able to test this issue with plugin 123974 (IBM WebSphere Application Server Multiple Vulnerabilities (swg21644047)).

Upgrading to version 2.4.6 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at svn.apache.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 13178.

The vulnerability is also documented in the databases at X-Force (85574) and Tenable (69342). See 7600, 8746, 9320 and 9321 for similar entries.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.5
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 69342
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Port: 🔍

OpenVAS ID: 103122
OpenVAS Name: Apache HTTP Server mod_dav_svn Denial of Service Vulnerability (Windows)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Exploit Delay Time: 🔍

Upgrade: HTTP Server 2.4.6
Patch: svn.apache.org
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

Fortigate IPS: 🔍

Timelineinfo

05/23/2012 🔍
05/23/2012 +0 days 🔍
05/23/2012 +0 days 🔍
02/19/2013 +272 days 🔍
07/10/2013 +140 days 🔍
07/10/2013 +0 days 🔍
07/10/2013 +0 days 🔍
07/16/2013 +6 days 🔍
07/23/2013 +7 days 🔍
08/14/2013 +22 days 🔍
10/30/2015 +807 days 🔍
05/20/2021 +2029 days 🔍

Sourcesinfo

Vendor: apache.org

Advisory: svn.apache.org
Researcher: Ben Riser
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-1896 (🔍)
OVAL: 🔍
IAVM: 🔍

X-Force: 85574
Vulnerability Center: 54047 - Apache HTTP Server 2 Before 2.2.25 Remote DoS Vulnerability via Crafted MERGE Request, Medium
SecurityFocus: 61129
Secunia: 54173 - Ubuntu update for apache2, Moderately Critical
OSVDB: 95498

See also: 🔍

Entryinfo

Created: 07/23/2013 10:56
Updated: 05/20/2021 14:27
Changes: 07/23/2013 10:56 (89), 03/02/2018 09:38 (2), 05/20/2021 14:25 (4), 05/20/2021 14:27 (1)
Complete: 🔍

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