+------------------------------------------------------------------------+ | EnGarde Secure Linux Security Advisory July 30, 2002 | | http://www.engardelinux.org/ ESA-20020730-019 | | | | Packages: openssl, openssl-misc | | Summary: several vulnerabilities in the openssl library. | +------------------------------------------------------------------------+ EnGarde Secure Linux is a secure distribution of Linux that features improved access control, host and network intrusion detection, Web based secure remote management, complete e-commerce using AllCommerce, and integrated open source security tools. OVERVIEW - -------- There are several potentially exploitable vulnerabilities in the OpenSSL toolkit. A security review of OpenSSL is being done by A.L. Digital Ltd and The Bunker (http://www.thebunker.net/) under the DARPA program CHATS. Through this review, the following vulnerabilities were discovered: 1. The client master key in SSL2 could be oversized and overrun a buffer. This vulnerability was also independently discovered by consultants at Neohapsis (http://www.neohapsis.com/) who have also demonstrated that the vulnerability is exploitable. 2. The session ID supplied to a client in SSL3 could be oversized and overrun a buffer. 3. Various buffers for ASCII representations of integers were too small on 64 bit platforms. 4. The ASN1 parser can be confused by supplying it with certain invalid encodings. The Common Vulnerabilities and Exposures project (cve.mitre.org/) has assigned the name CAN-2002-0656 to issues 1-2, CAN-2002-0655 to issue 3, and CAN-2002-0659 to issue 4. 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 UPDATED PACKAGES - ---------------- These updated packages are for EnGarde Secure Linux Community Edition. Source Packages: SRPMS/openssl-0.9.6-1.0.16.src.rpm MD5 Sum: 158ff68fb5474993694d1dd3f623b921 Binary Packages: i386/openssl-0.9.6-1.0.16.i386.rpm MD5 Sum: 9f7bd4009f352a3a3a3519c97ebe988d i386/openssl-misc-0.9.6-1.0.16.i386.rpm MD5 Sum: 281794e60d923df695f6bcf8aa17055b i386/openssl-devel-0.9.6-1.0.16.i386.rpm MD5 Sum: 18b3ecd6b9d210180457caeb50a1331e i686/openssl-0.9.6-1.0.16.i686.rpm MD5 Sum: 872eadde6cb52bcf93fae967c72949b1 i686/openssl-misc-0.9.6-1.0.16.i686.rpm MD5 Sum: 3baf870cbc35f3425cbd3110714ca3ed i686/openssl-devel-0.9.6-1.0.16.i686.rpm MD5 Sum: 718f5a6c89fac22f338177134fd5e6bd 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: security@guardiandigital.com EnGarde Advisories: http://www.engardelinux.org/advisories.html - -------------------------------------------------------------------------- $Id: ESA-20020730-019-openssl,v 1.2 2002/07/30 12:05:04 rwm Exp $ - -------------------------------------------------------------------------- Author: Ryan W. Maple <ryan@guardiandigital.com> Copyright 2002, Guardian Digital, Inc.