Scientific Linux Security Update : httpd on SL3.x i386/x86_64

This script is Copyright (C) 2012-2013 Tenable Network Security, Inc.


Synopsis :

The remote Scientific Linux host is missing one or more security
updates.

Description :

CVE-2009-1891 httpd: possible temporary DoS (CPU consumption) in
mod_deflate

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
file. (CVE-2009-1891)

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
www.windowsupdate.com. (BZ#506016)

After installing the updated packages, the httpd daemon must be
restarted for the update to take effect.

See also :

http://www.nessus.org/u?26d6f562
https://bugzilla.redhat.com/show_bug.cgi?id=506016

Solution :

Update the affected httpd, httpd-devel and / or mod_ssl packages.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)
Public Exploit Available : true

Family: Scientific Linux Local Security Checks

Nessus Plugin ID: 60636 ()

Bugtraq ID:

CVE ID: CVE-2009-1891
CVE-2009-2412