-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 +------------------------------------------------------------------------+ | EnGarde Secure Linux Security Advisory March 20, 2003 | | http://www.engardelinux.org/ ESA-20030320-010 | | | | Package: openssl | | Summary: Several vulnerabilities in the OpenSSL toolkit. | +------------------------------------------------------------------------+ EnGarde Secure Linux is a secure distribution of Linux that features improved access control, host and network intrusion detection, Web based secure remote management, e-commerce, and integrated open source security tools. OVERVIEW - -------- Recently several vulnerabilities have been found in the OpenSSL toolkit. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the names CAN-2003-0131 and CAN-2003-0147 to these issues. CAN-2003-0131 ------------- 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 [1]. OpenSSL has been found to be vulnerable to this type of attack. CAN-2003-0147 ------------- Recently David Brumley and Dan Boneh of Stanford University discovered and documented [2] a timing attack against RSA private keys, to be presented at the UNIX Security Symposium. OpenSSL has been found to be vulnerable to this type of attack if RSA blinding [3] is not enabled (which it is not by default). To defend against this vulnerability, this update enables RSA blinding by default. All users are recommended to upgrade immediately using the special SOLUTION in this advisory. [1] http://eprint.iacr.org/2003/052/ [2] http://crypto.stanford.edu/~dabo/abstracts/ssl-timing.html [3] http://www.openssl.org/docs/crypto/RSA_blinding_on.html SOLUTION - -------- Users of the EnGarde Professional edition can use the Guardian Digital Secure Network to update their systems automatically. EnGarde Community users should upgrade to the most recent version as outlined in this advisory. Updates may be obtained from: ftp://ftp.engardelinux.org/pub/engarde/stable/updates/ http://ftp.engardelinux.org/pub/engarde/stable/updates/ Before upgrading the package, the machine must either: a) be booted into a "standard" kernel; or b) have LIDS disabled. To disable LIDS, execute the command: # /sbin/lidsadm -S -- -LIDS_GLOBAL To install the updated package, execute the command: # rpm -Uvh files You must now update the LIDS configuration by executing the command: # /usr/sbin/config_lids.pl To re-enable LIDS (if it was disabled), execute the command: # /sbin/lidsadm -S -- +LIDS_GLOBAL To verify the signatures of the updated packages, execute the command: # rpm -Kv files Once the updated packages are installed, you must restart all the daemons which use the OpenSSL libraries. You may either reboot the system or restart the following daemons: httpd -- Apache web server (with mod_ssl) snortd -- Snort intrusion detection system sshd -- Secure shell daemon stunnel-imap -- SSL-enabled IMAP daemon stunnel-pop3 -- SSL-enabled POP3 daemon UPDATED PACKAGES - ---------------- These updated packages are for EnGarde Secure Linux Community Edition. Source Packages: SRPMS/openssl-0.9.6-1.0.19.src.rpm MD5 Sum: 950c1b57ac45404a4cbfc92143fbef8f Binary Packages: i386/openssl-0.9.6-1.0.19.i386.rpm MD5 Sum: cf76fc7d51366228d86b6ccc646ea234 i386/openssl-misc-0.9.6-1.0.19.i386.rpm MD5 Sum: e5eeee84ba5db7e3e320eebd66851ee2 i686/openssl-0.9.6-1.0.19.i686.rpm MD5 Sum: cdf88671bfacf2157fe999fff844d9c2 i686/openssl-misc-0.9.6-1.0.19.i686.rpm MD5 Sum: d0ad30b1522741299e6d689fd02df774 REFERENCES - ---------- Guardian Digital's public key: http://ftp.engardelinux.org/pub/engarde/ENGARDE-GPG-KEY OpenSSL's Official Web Site: http://www.openssl.org/ Security Contact: securityat_private EnGarde Advisories: http://www.engardelinux.org/advisories.html - -------------------------------------------------------------------------- $Id: ESA-20030320-010-openssl,v 1.2 2003/03/20 13:36:57 rwm Exp $ - -------------------------------------------------------------------------- Author: Ryan W. Maple <ryanat_private> Copyright 2003, Guardian Digital, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE+eceqHD5cqd57fu0RAn/YAJ9X1NTo7IR6fUu9vlF5e55XNrotwQCbB63D iK/joz2bz3PVkNP+9NoBy1I= =SXzU -----END PGP SIGNATURE----- ------------------------------------------------------------------------ To unsubscribe email engarde-security-requestat_private with "unsubscribe" in the subject of the message. Copyright(c) 2002 Guardian Digital, Inc. EnGardeLinux.org ------------------------------------------------------------------------ _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html
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