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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.3326 Security update for openssh 30 October 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: openssh Publisher: SUSE Operating System: SUSE Impact/Access: Increased Privileges -- Existing Account Access Privileged Data -- Existing Account Create Arbitrary Files -- Existing Account Denial of Service -- Remote/Unauthenticated Reduced Security -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-15919 CVE-2018-15473 CVE-2017-15906 CVE-2016-10708 CVE-2016-10012 Reference: ESB-2018.2762 ESB-2018.2713 Original Bulletin: https://www.suse.com/support/update/announcement/2018/suse-su-20183540-1/ - --------------------------BEGIN INCLUDED TEXT-------------------- SUSE Security Update: Security update for openssh ______________________________________________________________________________ Announcement ID: SUSE-SU-2018:3540-1 Rating: important References: #1016370 #1065000 #1076957 #1105010 #1105180 #1106163 #1106726 Cross-References: CVE-2016-10012 CVE-2016-10708 CVE-2017-15906 CVE-2018-15473 CVE-2018-15919 Affected Products: SUSE Linux Enterprise Server 11-SP3-LTSS SUSE Linux Enterprise Point of Sale 11-SP3 SUSE Linux Enterprise Debuginfo 11-SP3 ______________________________________________________________________________ An update that solves 5 vulnerabilities and has two fixes is now available. Description: This update for openssh fixes the following issues: Security issues fixed: - CVE-2018-15919: Remotely observable behaviour in auth-gss2.c in OpenSSH could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. OpenSSH developers do not want to treat such a username enumeration (or "oracle") as a vulnerability. (bsc#1106163) - CVE-2017-15906: The process_open function in sftp-server.c in OpenSSH did not properly prevent write operations in readonly mode, which allowed attackers to create zero-length files. (bsc#1065000, bsc#1106726) - CVE-2016-10708: sshd allowed remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via an out-of-sequence NEWKEYS message, as demonstrated by Honggfuzz, related to kex.c and packet.c. (bsc#1076957) - CVE-2018-15473: OpenSSH was prone to a user existance oracle vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c. (bsc#1105010) - CVE-2016-10012: Removed pre-auth compression support from the server to prevent possible cryptographic attacks. (bsc#1016370) Bugs fixed: - Fixed failing "AuthorizedKeysCommand" within a "Match User" block in sshd_config (bsc#1105180) Patch Instructions: To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: - SUSE Linux Enterprise Server 11-SP3-LTSS: zypper in -t patch slessp3-openssh-13848=1 - SUSE Linux Enterprise Point of Sale 11-SP3: zypper in -t patch sleposp3-openssh-13848=1 - SUSE Linux Enterprise Debuginfo 11-SP3: zypper in -t patch dbgsp3-openssh-13848=1 Package List: - SUSE Linux Enterprise Server 11-SP3-LTSS (i586 s390x x86_64): openssh-6.2p2-0.41.5.1 openssh-askpass-6.2p2-0.41.5.1 openssh-askpass-gnome-6.2p2-0.41.5.1 - SUSE Linux Enterprise Point of Sale 11-SP3 (i586): openssh-6.2p2-0.41.5.1 openssh-askpass-6.2p2-0.41.5.1 openssh-askpass-gnome-6.2p2-0.41.5.1 - SUSE Linux Enterprise Debuginfo 11-SP3 (i586 s390x x86_64): openssh-askpass-gnome-debuginfo-6.2p2-0.41.5.1 openssh-debuginfo-6.2p2-0.41.5.1 openssh-debugsource-6.2p2-0.41.5.1 References: https://www.suse.com/security/cve/CVE-2016-10012.html https://www.suse.com/security/cve/CVE-2016-10708.html https://www.suse.com/security/cve/CVE-2017-15906.html https://www.suse.com/security/cve/CVE-2018-15473.html https://www.suse.com/security/cve/CVE-2018-15919.html https://bugzilla.suse.com/1016370 https://bugzilla.suse.com/1065000 https://bugzilla.suse.com/1076957 https://bugzilla.suse.com/1105010 https://bugzilla.suse.com/1105180 https://bugzilla.suse.com/1106163 https://bugzilla.suse.com/1106726 - --------------------------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 auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights 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: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au 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 iQIVAwUBW9fVw2aOgq3Tt24GAQiLZA//WN6Vkds+xve3ZGkBplApc5BRNg/ujkxs 1PSFMx+kHHYQYkfebNhQO8xD59pdc9L8Bi0Oyy9zGn6dlnkCA2FPoTfCqGyiSdY6 lOrpFBva0MCXJSChYam7e10kHe9yl9OA82r9YDakGhGHvIlyVkEKt2v3tJOiKXVd YP9wz7uqfKsBhLqT1nhRn/qZaiHV1bHt2tLRZH2bWfssqsBkUcwHvmR/JdsillBv qLYud4aTGAiR40axghVrqaKzVR2iXBCUpDMBR0q7tq75pNrfvL6eMwWvrvLlH1jh 7TuwNWqGJncbc3DYVY0VBI2xFuMNyc/CRDYmSlSt2wjpFqV2bfWcNOfKZ5e48lgR LuDJii8EliOBCiVJXE6L8xxMGR+QfPddncBai57FITmw2Xx05Brv0tt7l32+dBVT HywxguGH7+bpUwMGQ/9naz6yR5oOBFtbfM7FbMR78znMvI4HDh+nDAc02AhlBpLE 8c6KZENR4xw6QotvHvhXRi6SbVD6LDdZMHf3fA+LbGiOe62T8VI5/kKGvOlqHqCD jAFQTgym2HMfbPpxHhWF6QD6MROwGxKJCVEgumrilE43l9o06Zfejx6uXirti7yL zvy9bVgR5vndIzpMeN1vD8QSBINvmnd4fYdKIL6NROibgPMsjyNpu8pQ82Y7lPoJ fY9HRRkFTLM= =CqIL -----END PGP SIGNATURE-----