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Vulnerability Assessment & Network Security Forums |
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If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery. Home >> Browse Vulnerability Assessment Database >> Denial of Service >> Apache Input Header Folding and mod_ssl ssl_io_filter_cleanup DoS Vulnerabilities Vulnerability Assessment Details
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Apache Input Header Folding and mod_ssl ssl_io_filter_cleanup DoS Vulnerabilities |
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Checks for version of Apache Detailed Explanation for this Vulnerability Assessment Summary : The remote web server is prone to multiple denial of service attacks. Description : The remote host appears to be running a version of Apache 2.x which is older than 2.0.50. There is denial of service flaw in Apache 2.0.x that can be triggered by sending a specially-crafted HTTP request, which results in the consumption of an arbitrary amount of memory. On 64-bit systems with more than 4GB virtual memory, this may lead to heap based buffer overflow. There is also a denial of service vulnerability in mod_ssl's 'ssl_io_filter_cleanup' function. By sending a request to vulnerable server over SSL and closing the connection before the server can send a response, a possible hacker can cause a memory violation that crashes the server. See also : http://www.guninski.com/httpd1.html Solution : Upgrade to Apache 2.0.50 or newer. Network Security Threat Level: Low / CVSS Base Score : 2 (AV:R/AC:L/Au:NR/C:N/A:P/I:N/B:N) Networks Security ID: 10619, 12877 Vulnerability Assessment Copyright: This script is Copyright (C) 2004 David Maciejak |
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