On 08/25/2011 12:51 PM, Amira Othman wrote:
I want to ask about apache killer and how to avoid it. I am using
httpd-2.2.3-43.3.vm on centos 5.6
As already posted on the list, this is one way of avoiding it:
1) Use SetEnvIf or mod_rewrite to detect a large number of ranges and then
either ignore the Range: header or reject the request.
Option 1: (Apache 2.0 and 2.2)
# Drop the Range header when more than 5 ranges.
# CVE-2011-3192
SetEnvIf Range (,.*?){5,} bad-range=1
RequestHeader unset Range env=bad-range
# optional logging.
CustomLog logs/range-CVE-2011-3192.log common env=bad-range
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