9523 : Apache HTTP Server mod_ssl Aborted Connection DoS
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Info

Last Modified

10 months ago

Percent Complete

100%

Disclosure

Jul 07, 2004

Discovery

Unknown

Dates

Exploit

Unknown

Solution

Unknown

Description

mod_ssl on Apache 2 contains a flaw that may allow a remote denial of service. The issue is triggered when an attacker forces an SSL connection to abort during a particular state causing the ssl_io_input_getline function to enter into an infinite loop, resulting in a loss of availability for the Apache server.

Classification

Location: Remote/Network Access Required
Attack Type: Denial of Service
Impact: Loss of Availability
Exploit: Exploit Unknown
Disclosure: OSVDB Verified

Solution

Currently, there are no known upgrades or patches to correct this issue. It is possible to correct the flaw by implementing the following workaround:

1. Disable mod_ssl in your Apache configuration file.

2. Apply appropriate operating system vendor released upgrade.

3. An unstable patch is available.

Products

Apache Software Foundation
Watch-list
Apache
Watch-list
2.0.x

References

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Nessus

14624 14667 14748 14752 14766 14807 15575 15898

Credit

  • Keil Hartmut -

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