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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2003.0715 -- NetBSD Security Advisory 2003-017 OpenSSL multiple vulnerabilities 13 October 2003 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: OpenSSL Publisher: NetBSD Operating System: NetBSD-current: sources prior to October 3, 2003 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 CVE Names: CAN-2003-0543, CAN-2003-0544, CAN-2003-0545 Ref: AL-2003.18 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- NetBSD Security Advisory 2003-017 ================================= Topic: OpenSSL multiple vulnerabilities Version: NetBSD-current: sources prior to October 3, 2003 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 openssl-0.9.6k/0.9.7c Severity: possible remote code injection Fixed: NetBSD-current: October 3, 2003 NetBSD-1.6 branch: October 3, 2003 (1.6.2 will include the fix) NetBSD-1.5 branch: October 4, 2003 pkgsrc: openssl-0.9.6k/0.9.7c corrects the issue Abstract ======== OpenSSL had multiple vulnerabilities, they were found by tests performed by NISCC (www.niscc.gov.uk). - - - ASN.1 decoder could overrun its stack if a malicious X.509 certificate is received - - - malfomed X.509 certificates could cause crashes under certain circumstances The vulnerability can be attacked remotely, even if SSL client authentication is not enabled. Note that OpenSSH is not affected by this issue, as it does not use the OpenSSL ASN.1 decoder. Technical Details ================= http://www.securityfocus.com/archive/1/339623/2003-09-27/2003-10-03/0 http://www.uniras.gov.uk/vuls/2003/006489/openssl.htm http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0545 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0543 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0544 Solutions and Workarounds ========================= A rebuild of libcrypto and libssl is necessary. If you have installed any program that statically links one of those libraries, it must be rebuilt too. If you have daemons that use those libraries, any running instances must be restarted. A reboot after replacing libcrypto/libssl is recommended. The following instructions describe how to upgrade your libcrypto/libssl binaries by updating your source tree and rebuilding and installing a new version of libcrypto/libssl. * NetBSD-current: Systems running NetBSD-current dated from before 2003-10-02 should be upgraded to NetBSD-current dated 2003-10-03 or later. The following directories need to be updated from the netbsd-current CVS branch (aka HEAD): crypto/dist/openssl To update from CVS, re-build, and re-install libcrypto and libssl: # cd src # cvs update -d -P 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 1.6, 1.6.1: The binary distribution of NetBSD 1.6 and 1.6.1 are vulnerable. Systems running NetBSD 1.6 sources dated from before 2003-10-02 should be upgraded from NetBSD 1.6 sources dated 2003-10-03 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 2003-10-03 should be upgraded from NetBSD 1.5.* sources dated 2003-10-04 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 ========= Matthias Scheler Revision History ================ 2003-10-09 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-SA2003-017.txt.asc Information about NetBSD and NetBSD security can be found at http://www.NetBSD.org/ and http://www.NetBSD.org/Security/. Copyright 2003, The NetBSD Foundation, Inc. All Rights Reserved. Redistribution permitted only in full, unmodified form. $NetBSD: NetBSD-SA2003-017.txt,v 1.4 2003/10/09 19:29:53 david Exp $ - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (NetBSD) Comment: For info see http://www.gnupg.org iQCVAwUBP4W4BD5Ru2/4N2IFAQEahgP/RZlrcFp0r97dBrOFC4z1P+wB+vjMjpyg pegiadLOcZzrvUmPyR1R+cNsOHHzSnjk92wAkSoN/Ua/WJTRY2eZaf3rGqPuulHL Yltbo3NRmphG+xq4hrwRuuiO8/fcIG7YPb1KSe3ym6IGI1ZYCTHRKgUKWeZISXQM HXNygVnafQQ= =GJ76 - -----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 firstname.lastname@example.org and we will forward your request to the appropriate person. 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On call after hours for member emergencies only. -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBP4n2Rih9+71yA2DNAQFB8wP+ODmewuMu27oBSH/YvLJmHgmofCu/Q05M UEeMCmVl568tP2+jVsVUSPqgkXvWNXMML5kMeJJAAXBd19uoz8B4o2Sx49VNaeZU 8N6coEXjxoIQm3MUruXPxTqQp1TIyElCjScqYn90qlEEi/io1pSVyRmB4QZyYq0u eKUzT2GQ+40= =qd2H -----END PGP SIGNATURE-----