CVE-2007-6750: Slow HTTP DoS Attacks Mitigation

Published Dec 27, 2011
·
Updated

An Uncontrolled Resource Consumption vulnerability in multiple products may allow an attacker to cause web service portal denial of service (DoS) via handling special crafted HTTP requests/responses in pieces slowly. Slow HTTP attacks are denial-of-service (DoS) attacks in which the attacker sends HTTP requests in pieces slowly, one at a time to a Web server. If an HTTP request is not complete, or if the transfer rate is very low, the server keeps its resources busy waiting for the rest of the data. When the server’s concurrent connection pool reaches its maximum, this creates a DoS. Slow HTTP attacks are easy to execute because they require only minimal resources from the attacker.

Other sources

The Apache HTTP Server 1.x and 2.x allows remote attackers to cause a denial of service (daemon outage) via partial HTTP requests, as demonstrated by Slowloris, related to the lack of the modreqtimeout module in versions before 2.2.15.

Affected Software

117 affected components
Apache HTTP Server=2.0.42
Apache HTTP Server=2.2
Apache HTTP Server=2.0.58
Apache HTTP Server=2.2.11
Apache HTTP Server=2.2.0
Apache HTTP Server=1.3.38
Apache HTTP Server=2.2.10
Apache HTTP Server=2.2.13
Apache HTTP Server=1.3.23
Apache HTTP Server=2.0.47
Apache HTTP Server=1.3.27
Apache HTTP Server=2.1
Apache HTTP Server=2.0.56
Apache HTTP Server=2.0.50
Apache HTTP Server=2.2.2
Apache HTTP Server=1.3.10
Apache HTTP Server=1.0.5
Apache HTTP Server=2.1.3
Apache HTTP Server=1.1.1
Apache HTTP Server=2.2.4
Apache HTTP Server=2.0.35
Apache HTTP Server=2.0.37
Apache HTTP Server=2.0.55
Apache HTTP Server<=2.2.14
Apache HTTP Server=1.3.33
Apache HTTP Server=1.3.8
Apache HTTP Server=2.1.2
Apache HTTP Server=2.1.1
Apache HTTP Server=1.3.36
Apache HTTP Server=2.0.44
Apache HTTP Server=1.3.16
Apache HTTP Server=1.3.1
Apache HTTP Server=1.3.25
Apache HTTP Server=1.3.28
Apache HTTP Server=1.3.19
Apache HTTP Server=2.0.39
Apache HTTP Server=1.3.31
Apache HTTP Server=1.3.68
Apache HTTP Server=1.3.24
Apache HTTP Server=1.3.5
Apache HTTP Server=2.2.8
Apache HTTP Server=2.0.52
Apache HTTP Server=1.3.20
Apache HTTP Server=1.0.2
Apache HTTP Server=2.1.7
Apache HTTP Server=2.0.53
Apache HTTP Server=1.4.0
Apache HTTP Server=2.0.57
Apache HTTP Server=1.3.35
Apache HTTP Server=2.0.51
Apache HTTP Server=1.1
Apache HTTP Server=1.3.6
Apache HTTP Server=2.0.28-beta
Apache HTTP Server=1.3.2
Apache HTTP Server=2.0.63
Apache HTTP Server=1.3.34
Apache HTTP Server=2.0.41
Apache HTTP Server=2.0.49
Apache HTTP Server=1.3.4
Apache HTTP Server=2.1.6
Apache HTTP Server=1.2.5
Apache HTTP Server=2.0.9
Apache HTTP Server=1.3.13
Apache HTTP Server=1.0
Apache HTTP Server=2.0.34-beta
Apache HTTP Server=1.2.4
Apache HTTP Server=1.3.39
Apache HTTP Server=1.3.30
Apache HTTP Server=1.3.18
Apache HTTP Server=2.0.61
Apache HTTP Server=2.1.9
Apache HTTP Server=2.2.6
Apache HTTP Server=2.0.32
Apache HTTP Server=1.3.65
Apache HTTP Server=1.0.3
Apache HTTP Server=2.0.38
Apache HTTP Server=1.3.0
Apache HTTP Server=2.2.9
Apache HTTP Server=1.3
Apache HTTP Server=1.3.12
Apache HTTP Server=2.1.4
Apache HTTP Server=2.0.48
Apache HTTP Server=1.3.3
Apache HTTP Server=1.3.17
Apache HTTP Server=1.3.1.1
Apache HTTP Server=2.0.45
Apache HTTP Server=1.3.26
Apache HTTP Server=1.3.9
Apache HTTP Server=2.2.12
Apache HTTP Server=2.0.40
Apache HTTP Server=2.1.5
Apache HTTP Server=2.0.36
Apache HTTP Server=1.3.32
Apache HTTP Server=1.3.15
Apache HTTP Server=1.3.14
Apache HTTP Server=1.3.42
Apache HTTP Server=1.3.29
Apache HTTP Server=1.99
Apache HTTP Server=2.2.3
Apache HTTP Server=2.0.46
Apache HTTP Server=1.3.22
Apache HTTP Server=1.3.37
Apache HTTP Server=1.3.11
Apache HTTP Server=1.2.6
Apache HTTP Server=2.0.54
Apache HTTP Server=2.0.43
Apache HTTP Server=2.0.59
Apache HTTP Server=2.1.8
Apache HTTP Server=1.2
Apache HTTP Server=1.2.9
Apache HTTP Server=1.3.7
Apache HTTP Server=2.0.28
Apache HTTP Server=2.0
Apache HTTP Server=1.3.41
Apache HTTP Server=2.0.32-beta
Apache HTTP Server=2.2.1
Apache HTTP Server=2.0.60

Event History

Dec 27, 2011
CVE Published
06:55 PM
CVE Published
via MITRE·11:00 PM
Data Sourced
via MITRE·11:00 PM
Description
Feb 3, 2020
Advisory Published
via FortiGuard·12:00 AM
Data Sourced
via FortiGuard·12:00 AM
DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2007-6750?

The severity of CVE-2007-6750 is classified as high due to its potential for causing denial of service (DoS) attacks.

2

How do I fix CVE-2007-6750?

To fix CVE-2007-6750, upgrade to a patched version of Apache HTTP Server beyond the affected versions.

3

What software versions are affected by CVE-2007-6750?

CVE-2007-6750 affects multiple versions of Apache HTTP Server, specifically versions 1.0 to 2.2.14.

4

Can CVE-2007-6750 be exploited remotely?

Yes, CVE-2007-6750 can be exploited remotely through specially crafted HTTP requests.

5

What tactics do attackers use with CVE-2007-6750?

Attackers typically use slow HTTP attacks to exploit CVE-2007-6750 and exhaust server resources.

Contact

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