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Moderately critical

Apache HTTP Server mod_proxy_ajp Denial of Service Vulnerability

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Release Date:  2011-09-14    Views:  5,978

Secunia Advisory SA46013

Where:

From remote

Impact:

DoS

Solution Status:

Vendor Patch

CVE Reference(s):

Description


A vulnerability has been reported in Apache HTTP Server, which can be exploited by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an error within the processing of malformed HTTP requests in mod_proxy_ajp when being used in combination with mod_proxy_balancer. This can be exploited to put a backend server into an error state by sending specially crafted HTTP requests, resulting in a temporary DoS until the retry timeout expires.

The vulnerability is reported in versions 2.2.12, 2.2.13, 2.2.14, 2.2.15, 2.2.16, 2.2.17, 2.2.18, 2.2.19, and 2.2.20.


Solution:
Update to version 2.2.21.

Provided and/or discovered by:
Reported by the vendor.

Original Advisory:
http://httpd.apache.org/security/vulnerabilities_22.html#2.2.21

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Apache HTTP Server mod_proxy_ajp Denial of Service Vulnerability

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