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[Bug 1875299] Re: Apache's mod_remoteip: IP address spoofing via X-Forwarded-For when mod_rewrite rule is triggered

To: group.of.nepali.translators@xxxxxxxxxxxxxxxxxxx
From: Christian Ehrhardt  <1875299@xxxxxxxxxxxxxxxxxx>
Date: Mon, 15 Jun 2020 12:09:47 -0000
Reply-to: Bug 1875299 <1875299@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Changed in: apache2 (Ubuntu)
       Status: Confirmed => Fix Released

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https://bugs.launchpad.net/bugs/1875299

Title:
  Apache's mod_remoteip: IP address spoofing via X-Forwarded-For when
  mod_rewrite rule is triggered

Status in apache2 package in Ubuntu:
  Fix Released
Status in apache2 source package in Xenial:
  Triaged
Status in apache2 package in Debian:
  New

Bug description:
  There is a bug in mod_remoteip (a part of Apache Web Server): https://bz.apache.org/bugzilla/show_bug.cgi?id=60251
  Although the status of this bug is "NEW", actually it was fixed in Apache 2.4.24.
  Although a CVE id was not requested yet, actually it is a vulnerability.

  The fix was not backported to Ubuntu 16.04 (xenial).

  Impact: if a victim uses Apache rewrite rules, then an attacker can
  spoof his IP address for logs and PHP scripts.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: apache2 2.4.18-2ubuntu3.14
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  Apache2ConfdDirListing: False
  ApportVersion: 2.20.1-0ubuntu2.23
  Architecture: amd64
  Date: Mon Apr 27 13:17:43 2020
  SourcePackage: apache2
  UpgradeStatus: No upgrade log present (probably fresh install)
  error.log:
   
  modified.conffile..etc.apache2.apache2.conf: [modified]
  modified.conffile..etc.apache2.mods-available.dir.conf: [modified]
  modified.conffile..etc.apache2.mods-available.ssl.conf: [modified]
  modified.conffile..etc.apache2.ports.conf: [modified]
  modified.conffile..etc.apache2.sites-available.000-default.conf: [modified]
  modified.conffile..etc.apache2.sites-available.default-ssl.conf: [modified]
  mtime.conffile..etc.apache2.apache2.conf: 2020-04-23T15:45:48.416970
  mtime.conffile..etc.apache2.mods-available.dir.conf: 2020-04-23T12:03:13.711062
  mtime.conffile..etc.apache2.mods-available.ssl.conf: 2020-04-23T12:02:44.854484
  mtime.conffile..etc.apache2.ports.conf: 2020-04-23T15:45:48.169037
  mtime.conffile..etc.apache2.sites-available.000-default.conf: 2020-04-23T15:45:48.197030
  mtime.conffile..etc.apache2.sites-available.default-ssl.conf: 2020-04-23T15:45:48.225022

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