Date: Tue, 30 Jul 2002 09:24:18 -0400 (EDT)
From: EnGarde Secure Linux <[email protected]>
To: [email protected], [email protected],
Subject: [ESA-20020730-019] several vulnerabilities in the openssl library
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| 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: [email protected]
EnGarde Advisories: http://www.engardelinux.org/advisories.html
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$Id: ESA-20020730-019-openssl,v 1.2 2002/07/30 12:05:04 rwm Exp $
- --------------------------------------------------------------------------
Author: Ryan W. Maple <[email protected]>
Copyright 2002, Guardian Digital, Inc.
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