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 USETOOLS=no cleandir dependall
    # make USETOOLS=no install
    # cd ../../lib/libssl
    # make USETOOLS=no cleandir dependall
    # make USETOOLS=no 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

Ossi Herrala for corrections

Revision History

2004-02-18 Initial release
                2004-02-20 Note USETOOLS=no in 1.6 instructions.
                2004-04-25 Note USETOOLS=no in all 1.6 instructions.

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.