National Vulnerability Database

National Vulnerability Database

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    Vulnerabilities Detail

CVE-2007-0086 Detail

Description

** 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.

Source:  MITRE
Description Last Modified:  01/05/2007

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 7.8 HIGH
Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:C) (V2 legend)
Impact Subscore: 6.9
Exploitability Subscore: 10.0

Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete
Additional Information:
Allows disruption of service

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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Hyperlink Resource
http://www.securityfocus.com/archive/1/455833/100/0/threaded
http://www.securityfocus.com/archive/1/455879/100/0/threaded
http://www.securityfocus.com/archive/1/455882/100/0/threaded
http://www.securityfocus.com/archive/1/455920/100/0/threaded

Technical Details

Vulnerability Type (View All)

Vulnerable software and versions Switch to CPE 2.2

Configuration 1
OR
cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*

Denotes Vulnerable Software
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Change History

2 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2007-0086
NVD Published Date:
01/05/2007
NVD Last Modified:
10/16/2018