NetBSD Security Advisory 2004-003: OpenSSL 0.9.6 ASN.1 parser vulnerability

[NetBSD Security-Officer <security-officer () netbsd org>]

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                 NetBSD Security Advisory 2004-003
                 =================================

Topic:          OpenSSL 0.9.6 ASN.1 parser vulnerability

Version:        NetBSD-current: sources prior to 2003/07/24
                NetBSD 1.6.1:   affected
                NetBSD 1.6:     affected
                NetBSD-1.5.3:   affected
                NetBSD-1.5.2:   affected
                NetBSD-1.5.1:   affected
                NetBSD-1.5:     affected
                pkgsrc:         packages prior to (including) 0.9.6k

Severity:       possible remote denial-of-service

Fixed:          NetBSD-current:         July 24, 2003
                NetBSD-1.6 branch:      November 8, 2003 (1.6.2 will include the fix)
                NetBSD-1.5 branch:      November 7, 2003
                pkgsrc:                 openssl-0.9.6l corrects this issue


Abstract
========

OpenSSL 0.9.6k ASN.1 parser had a possible denial-of-service
vulnerability.

This vulnerability is different from 2003-017.

OpenSSL 0.9.7 is not affected.


Technical Details
=================

http://www.kb.cert.org/vuls/id/412478

http://www.openssl.org/news/secadv_20031104.txt


Solutions and Workarounds
=========================

Release of NetBSD 1.6.2 is imminent. This is a reminder
to consider upgrading when they are available, if you are running
anything older than NetBSD 1.6  Many security-related improvements
have been made.

NetBSD 1.6.2 may be considered a binary patch for this advisory.

* Rebuilding from source:

libcrypto and libssl have to be rebuilt.

The following instructions describe how to upgrade your libcrypto and
libssl binaries by updating your source tree and rebuilding and
installing a new version of libcrypto and libssl.

* NetBSD-current:

        NetBSD-current has included the OpenSSL 0.9.7 series since July 24,
        2003, therefore upgrading to sources after July 24, 2003 is required.


* NetBSD 1.6, 1.6.1:

        The binary distributions of NetBSD 1.6 and 1.6.1 are vulnerable.

        Systems running NetBSD 1.6 sources dated from before
        2003-11-07 should be upgraded from NetBSD 1.6 sources dated
        2003-11-08 or later.

        NetBSD 1.6.2 will include the fix.

        The following directories need to be updated from the
        netbsd-1-6 CVS branch:
                crypto/dist/openssl

        To update from CVS, re-build, and re-install libcrypto and libssl:

                # cd src
                # cvs update -d -P -r netbsd-1-6 crypto/dist/openssl

                # cd lib/libcrypto
                # make cleandir dependall
                # make install
                # cd ../../lib/libssl
                # make cleandir dependall
                # make install

* NetBSD 1.5, 1.5.1, 1.5.2, 1.5.3:

        The binary distribution of NetBSD 1.5 to 1.5.3 are vulnerable.   

        Systems running NetBSD 1.5, 1.5.1, 1.5.2, or 1.5.3 sources dated
        from before 2003-11-06 should be upgraded from NetBSD 1.5.*
        sources dated 2003-11-07 or later.

        The following directories need to be updated from the
        netbsd-1-5 CVS branch:
                crypto/dist/openssl

        To update from CVS, re-build, and re-install libcrypto and libssl:

                # cd src
                # cvs update -d -P -r netbsd-1-5 crypto/dist/openssl

                # cd lib/libcrypto
                # make cleandir dependall
                # make install
                # cd ../../lib/libssl
                # make cleandir dependall
                # make install


Thanks To
=========

Dr Stephen Henson


Revision History
================

        2004-02-18      Initial release


More Information
================

Advisories may be updated as new information becomes available.
The most recent version of this advisory (PGP signed) can be found at 
  ftp://ftp.NetBSD.org/pub/NetBSD/security/advisories/NetBSD-SA2004-003.txt.asc

Information about NetBSD and NetBSD security can be found at
http://www.NetBSD.org/ and http://www.NetBSD.org/Security/.


Copyright 2004, The NetBSD Foundation, Inc.  All Rights Reserved.
Redistribution permitted only in full, unmodified form.

$NetBSD: NetBSD-SA2004-003.txt.asc,v 1.3 2004/02/19 02:19:40 david Exp $

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