bugtraq - [OpenPKG-SA-2003.026] OpenPKG Security Advisory (openssl)

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Date: Thu, 20 Mar 2003 21:28:09 +0100
From: OpenPKG <openpkg@...npkg.org>
To: bugtraq@...urityfocus.com
Subject: [OpenPKG-SA-2003.026] OpenPKG Security Advisory (openssl)


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________________________________________________________________________

OpenPKG Security Advisory                            The OpenPKG Project
http://www.openpkg.org/security.html              http://www.openpkg.org
openpkg-security@...npkg.org                         openpkg@...npkg.org
OpenPKG-SA-2003.026                                          20-Mar-2003
________________________________________________________________________

Package:             openssl
Vulnerability:       information leakage
OpenPKG Specific:    no

Affected Releases:   Affected Packages:         Corrected Packages:
OpenPKG CURRENT      <= openssl-0.9.7a-20030317 >= openssl-0.9.7a-20030320
OpenPKG 1.2          <= openssl-0.9.7-1.2.2     >= openssl-0.9.7-1.2.3
OpenPKG 1.1          <= openssl-0.9.6g-1.1.2    >= openssl-0.9.6g-1.1.3

Affected Releases:   Dependent Packages:

OpenPKG CURRENT      apache cadaver cpu curl dsniff easysoap ethereal
                     exim fetchmail imap imapd inn linc links lynx mico
                     mixmaster mozilla mutt nail neon openldap openvpn
                     perl-ssl postfix postgresql qpopper samba sendmail
                     siege sio sitecopy socat stunnel subversion sysmon
                     w3m wget

OpenPKG 1.2          apache cpu curl ethereal fetchmail imap inn
                     links lynx mico mutt nail neon openldap perl-ssl
                     postfix postgresql qpopper samba sendmail siege
                     sitecopy socat stunnel sysmon w3m wget

OpenPKG 1.1          apache curl fetchmail inn links lynx mutt neon
                     openldap perl-ssl postfix postgresql qpopper samba
                     siege sitecopy socat stunnel sysmon w3m

Description:
  According to an OpenSSL [0] security advisory [1], Czech cryptologists
  Vlastimil Klima, Ondrej Pokorny, and Tomas Rosa have come up with an
  extension of the "Bleichenbacher attack" on RSA with PKCS #1 v1.5
  padding as used in SSL 3.0 and TLS 1.0. The attack was documented
  in their report "Attacking RSA-based Sessions in SSL/TLS" [2]. The
  Common Vulnerabilities and Exposures (CVE) project assigned the id
  CAN-2003-0147 [3] to the problem.

  Their attack requires the attacker to open millions of SSL/TLS
  connections to the server under attack. The server's behaviour when
  faced with specially made-up RSA ciphertexts can reveal information
  that in effect allows the attacker to perform a single RSA private key
  operation on a ciphertext of its choice using the server's RSA key.
  Note that the server's RSA key is not compromised in this attack.

  Please check whether you are affected by running "<prefix>/bin/rpm -q
  openssl". If you have the "openssl" package installed and its version
  is affected (see above), we recommend that you immediately upgrade it
  (see Solution) and it's dependent packages (see above), if any, too.
  [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 [4] and update your OpenPKG installation by applying the binary
  RPM [5]. For the current release OpenPKG 1.2, perform the following
  operations to permanently fix the security problem (for other releases
  adjust accordingly).

  $ ftp ftp.openpkg.org
  ftp> bin
  ftp> cd release/1.2/UPD
  ftp> get openssl-0.9.7-1.2.3.src.rpm
  ftp> bye
  $ <prefix>/bin/rpm -v --checksig openssl-0.9.7-1.2.3.src.rpm
  $ <prefix>/bin/rpm --rebuild openssl-0.9.7-1.2.3.src.rpm
  $ su -
  # <prefix>/bin/rpm -Fvh <prefix>/RPM/PKG/openssl-0.9.7-1.2.3.*.rpm

  Additionally, you have to rebuild and reinstall all dependent
  packages (see above), too. [4][5]
________________________________________________________________________

References:
  [0] http://www.openssl.org/
  [1] http://www.openssl.org/news/secadv_20030319.txt
  [2] http://eprint.iacr.org/2003/052/
  [3] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0131
  [4] http://www.openpkg.org/tutorial.html#regular-source
  [5] http://www.openpkg.org/tutorial.html#regular-binary
  [6] ftp://ftp.openpkg.org/release/1.1/UPD/openssl-0.9.6g-1.1.3.src.rpm
  [7] ftp://ftp.openpkg.org/release/1.2/UPD/openssl-0.9.7-1.2.3.src.rpm
  [8] ftp://ftp.openpkg.org/release/1.1/UPD/
  [9] ftp://ftp.openpkg.org/release/1.2/UPD/
  [10] http://www.openpkg.org/security.html#signature
________________________________________________________________________

For security reasons, this advisory was digitally signed with
the OpenPGP public key "OpenPKG <openpkg@...npkg.org>" (ID 63C4CB9F)
of the OpenPKG project which you can find under the official URL
http://www.openpkg.org/openpkg.pgp or on http://keyserver.pgp.com/. To
check the integrity of this advisory, verify its digital signature by
using GnuPG (http://www.gnupg.org/). For instance, pipe this message to
the command "gpg --verify --keyserver keyserver.pgp.com".
________________________________________________________________________

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