Secunia Security Advisory - A vulnerability has been reported in Apache HTTP Server, which can be exploited by malicious people to cause a DoS (Denial of Service).
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TITLE:
Apache HTTP Server mod_proxy_ajp Denial of Service Vulnerability
SECUNIA ADVISORY ID:
SA46013
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RELEASE DATE:
2011-09-14
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http://secunia.com/advisories/46013/
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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
OTHER REFERENCES:
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http://secunia.com/vulnerability_intelligence/
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EXTENDED DESCRIPTION:
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EXTENDED SOLUTION:
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EXPLOIT:
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