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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2004.0150 -- NetBSD Security Advisory 2004-003 OpenSSL 0.9.6 ASN.1 parser vulnerability 23 February 2004 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: OpenSSL 0.9.6k ASN.1 parser Publisher: NetBSD Operating System: NetBSD-current sources prior to 2003/07/24 NetBSD 1.6.1 NetBSD 1.6 NetBSD-1.5.3 NetBSD-1.5.2 NetBSD-1.5.1 NetBSD-1.5 Impact: Denial of Service Access Required: Remote Comment: This vulnerability is different from that described in: ESB-2003.0715 -- NetBSD Security Advisory 2003-017 -- OpenSSL multiple vulnerabilities http://www.auscert.org.au/render.html?it=3523 and AL-2003.18 -- Vulnerability Issues in Implementations of the TLS and SSL Protocols http://www.auscert.org.au/render.html?it=3493 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- 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,v 1.4 2004/02/18 14:17:39 david Exp $ - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (NetBSD) iQCVAwUBQDU2VD5Ru2/4N2IFAQH3kwP/alouams80CIWUjVPN85AVp56DwNoF9i1 5tzicFli28yJZrWVwFj/hbst3qE/Tzq4ikf2eHaQAMUUJYKlFTX/+Izr0FKPgE8K MYN9c3WTBMaZn08TjhEztnJd/gL7BvS5CwHo4RvhmLi3845fdqPrC8rAnznXwKJe KCwJVvhT040= =dV/2 - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to email@example.com and we will forward your request to the appropriate person. This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 Internet Email: firstname.lastname@example.org Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBQDmdJSh9+71yA2DNAQGiuAP7BrVhfcD2WT5OyT9jhwuzgmTLnxLxxMvV YZO2T86g25XLyecUDxpW8u4DOCpbLUZMyHHvedcqia/D9U3eyoAKHCVPaP163fbz W1EE9q7Z+QCgWPRZf64pI3Pw6tzvycyNUr5Uo1vJ5ZF6NnyJsXMzIhmbaBoe/qZp oUa27Pa8lV0= =OAOB -----END PGP SIGNATURE-----