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[OpenPKG-SA-2005.023] OpenPKG Security Advisory (openvpn)



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OpenPKG Security Advisory                            The OpenPKG Project
http://www.openpkg.org/security.html              http://www.openpkg.org
openpkg-security@xxxxxxxxxxx                         openpkg@xxxxxxxxxxx
OpenPKG-SA-2005.023                                          02-Nov-2005
________________________________________________________________________

Package:             openvpn
Vulnerability:       arbitrary code execution, denial of service
OpenPKG Specific:    no

Affected Releases:   Affected Packages:        Corrected Packages:
OpenPKG CURRENT      <= openvpn-2.0.2-20050928 >= openvpn-2.0.4-20051102 
OpenPKG 2.5          <= openvpn-2.0.2-2.5.0    >= openvpn-2.0.2-2.5.1    
OpenPKG 2.4          <= openvpn-2.0-2.4.0      >= openvpn-2.0-2.4.1      
OpenPKG 2.3          N.A.                      N.A.

Dependent Packages:  none

Description:
  According to a BUGTRAQ report [0], a Denial of Service (DoS)
  vulnerability exists in the OpenVPN [1] network security application.
  The vulnerability allows a malicious or compromised server to execute
  arbitrary code on the client. The Common Vulnerabilities and Exposures
  (CVE) project assigned the id CVE-2005-3393 [2] to the problem.

  Additionally, another DoS situation can occur if OpenVPN in TCP server
  mode receives an error on accept(2) and the resulting exception
  handler causes a segmentation fault. The Common Vulnerabilities and
  Exposures (CVE) project assigned the id CVE-2005-3409 [3] to the
  problem.

  Please check whether you are affected by running "<prefix>/bin/openpkg
  rpm -q openvpn". If you have the "openvpn" package installed and its
  version is affected (see above), we recommend that you immediately
  upgrade it (see Solution) [4][5].

Solution:
  Select the updated source RPM appropriate for your OpenPKG release
  [6][7], fetch it from the OpenPKG FTP service [8][9] or a mirror
  location, verify its integrity [10], build a corresponding binary
  RPM from it [3] and update your OpenPKG installation by applying the
  binary RPM [5]. For the most recent release OpenPKG 2.5, perform the
  following operations to permanently fix the security problem (for
  other releases adjust accordingly).

  $ ftp ftp.openpkg.org
  ftp> bin
  ftp> cd release/2.5/UPD
  ftp> get openvpn-2.0.2-2.5.1.src.rpm
  ftp> bye
  $ <prefix>/bin/openpkg rpm -v --checksig openvpn-2.0.2-2.5.1.src.rpm
  $ <prefix>/bin/openpkg rpm --rebuild openvpn-2.0.2-2.5.1.src.rpm
  $ su -
  # <prefix>/bin/openpkg rpm -Fvh <prefix>/RPM/PKG/openvpn-2.0.2-2.5.1.*.rpm
________________________________________________________________________

References:
  [0]  http://marc.theaimsgroup.com/?l=bugtraq&m=113081023121059&w=2
  [1]  http://www.openvpn.net/
  [2]  http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3393
  [3]  http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3409
  [4]  http://www.openpkg.org/tutorial.html#regular-source
  [5]  http://www.openpkg.org/tutorial.html#regular-binary
  [6]  ftp://ftp.openpkg.org/release/2.5/UPD/openvpn-2.0.2-2.5.1.src.rpm
  [7]  ftp://ftp.openpkg.org/release/2.4/UPD/openvpn-2.0-2.4.1.src.rpm
  [8]  ftp://ftp.openpkg.org/release/2.5/UPD/
  [9]  ftp://ftp.openpkg.org/release/2.4/UPD/
  [10] http://www.openpkg.org/security.html#signature
________________________________________________________________________

For security reasons, this advisory was digitally signed with the
OpenPGP public key "OpenPKG <openpkg@xxxxxxxxxxx>" (ID 63C4CB9F) of the
OpenPKG project which you can retrieve from http://pgp.openpkg.org and
hkp://pgp.openpkg.org. Follow the instructions on http://pgp.openpkg.org/
for details on how to verify the integrity of this advisory.
________________________________________________________________________

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