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[Bryce Harrington <1769304@xxxxxxxxxxxxxxxxxx>]

[Xenial has reached end of its standard support period.]

** Changed in: apache2 (Ubuntu Xenial)
       Status: Triaged => Won't Fix

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https://bugs.launchpad.net/bugs/1769304

Title:
  Apache2 mod_remoteip+rewrite allows client to forge IP address

Status in apache2 package in Ubuntu:
  Fix Released
Status in apache2 source package in Xenial:
  Won't Fix

Bug description:
  Apache bug #60251 describes this problem:

  https://bz.apache.org/bugzilla/show_bug.cgi?id=60251

  mod_remoteip allows us to set the client's IP address using a trusted
  proxy's X-Forwarded-For header. However, in a location which uses a
  RewriteRule, the last IP address in the chain is incorrectly stripped
  while redirecting to the new location, allowing a caller to forge
  whatever IP address they like by including it in an X-Forwarded-For
  header.

  Version 2.4.18-2ubuntu3.8 is vulnerable to this in Xenial. This is
  fixed upstream in 2.4.24, can the fix be backported to xenial-updates?

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