This script is Copyright (C) 2012-2014 Tenable Network Security, Inc.
The remote Scientific Linux host is missing one or more security
CVE-2009-1891 httpd: possible temporary DoS (CPU consumption) in
CVE-2009-2412 apr, apr-util: Integer overflows in memory pool (apr)
and relocatable memory (apr-util) management
Multiple integer overflow flaws, leading to heap-based buffer
overflows, were found in the way the Apache Portable Runtime (APR)
manages memory pool and relocatable memory allocations. An attacker
could use these flaws to issue a specially crafted request for memory
allocation, which would lead to a denial of service (application
crash) or, potentially, execute arbitrary code with the privileges of
an application using the APR libraries. (CVE-2009-2412)
A denial of service flaw was found in the Apache mod_deflate module.
This module continued to compress large files until compression was
complete, even if the network connection that requested the content
was closed before compression completed. This would cause mod_deflate
to consume large amounts of CPU if mod_deflate was enabled for a large
This update also fixes the following bug :
- in some cases the Content-Length header was dropped from
HEAD responses. This resulted in certain sites not
working correctly with mod_proxy, such as
After installing the updated packages, the httpd daemon must be
restarted for the update to take effect.
See also :
Update the affected httpd, httpd-devel and / or mod_ssl packages.
Risk factor :
Critical / CVSS Base Score : 10.0
Public Exploit Available : true
Family: Scientific Linux Local Security Checks
Nessus Plugin ID: 60636 ()
CVE ID: CVE-2009-1891CVE-2009-2412
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