National Vulnerability Database (NVD) National Vulnerability Database (CVE-2007-0086)

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NVD is the U.S. government repository of standards based vulnerability management data. This data enables automation of vulnerability management, security measurement, and compliance (e.g. FISMA).

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NVD contains:

CVE Vulnerabilities: 55154
Checklists: 202
US-CERT Alerts: 231
US-CERT Vuln Notes: 2692
OVAL Queries: 8140
CPE Names: 69098

Last updated: Wed Feb 20 18:09:47 EST 2013

CVE Publication rate: 15.3

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NVD is a product of the NIST Computer Security Division and is sponsored by the Department of Homeland Security's National Cyber Security Division. It supports the U.S. government multi-agency (OSD, DHS, NSA, DISA, and NIST) Information Security Automation Program. It is the U.S. government content repository for the Security Content Automation Protocol (SCAP).

NIST Security Configuration Checklists - CSD

National Cyber-Alert System

Vulnerability Summary for CVE-2007-0086

Original release date:01/05/2007

Last revised:11/15/2008

Source: US-CERT/NIST

Overview

** DISPUTED ** The Apache HTTP Server, when accessed through a TCP connection with a large window size, allows remote attackers to cause a denial of service (network bandwidth consumption) via a Range header that specifies multiple copies of the same fragment. NOTE: the severity of this issue has been disputed by third parties, who state that the large window size required by the attack is not normally supported or configured by the server, or that a DDoS-style attack would accomplish the same goal.

Impact

CVSS Severity (version 2.0):

CVSS v2 Base Score:7.8 (HIGH) (AV:N/AC:L/Au:N/C:N/I:N/A:C) (legend)

Impact Subscore: 6.9

Exploitability Subscore: 10.0

CVSS Version 2 Metrics:

Access Vector: Network exploitable

Access Complexity: Low

Authentication: Not required to exploit

Impact Type:Allows disruption of serviceUnknown

Vendor Statements (disclaimer)

Official Statement from Red Hat (01/11/2007)

Red Hat does not consider this issue to be a security vulnerability. The pottential attacker has to send acknowledgement packets periodically to make server generate traffic. Exactly the same effect could be achieved by simply downloading the file. The statement that setting the TCP window size to arbitrarily high value would permit the attacker to disconnect and stop sending ACKs is false, because Red Hat Enterprise Linux limits the size of the TCP send buffer to 4MB by default.

References to Advisories, Solutions, and Tools

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External Source: BUGTRAQ

Name: 20070103 a cheesy Apache / IIS DoS vuln (+a question)

Hyperlink:http://www.securityfocus.com/archive/1/archive/1/455833/100/0/threaded

External Source: BUGTRAQ

Name: 20070104 Re: a cheesy Apache / IIS DoS vuln (+a question)

Hyperlink:http://www.securityfocus.com/archive/1/455920/100/0/threaded

External Source: BUGTRAQ

Name: 20070104 Re: a cheesy Apache / IIS DoS vuln (+a question)

Hyperlink:http://www.securityfocus.com/archive/1/455882/100/0/threaded

External Source: BUGTRAQ

Name: 20070104 Re: a cheesy Apache / IIS DoS vuln (+a question)

Hyperlink:http://www.securityfocus.com/archive/1/455879/100/0/threaded