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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.3591 Security update for openssh 19 November 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: openssh Publisher: SUSE Operating System: SUSE Impact/Access: Access Confidential Data -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-15919 CVE-2018-15473 Reference: ESB-2018.3570 ESB-2018.3520 ESB-2018.3326 Original Bulletin: https://www.suse.com/support/update/announcement/2018/suse-su-20183781-1/ https://www.suse.com/support/update/announcement/2018/suse-su-20183776-1/ Comment: This bulletin contains two (2) security advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- SUSE Security Update: Security update for openssh ______________________________________________________________________________ Announcement ID: SUSE-SU-2018:3781-1 Rating: moderate References: #1091396 #1105010 #1106163 #964336 #982273 Cross-References: CVE-2018-15473 CVE-2018-15919 Affected Products: SUSE Linux Enterprise Server 11-SP4 SUSE Linux Enterprise Debuginfo 11-SP4 ______________________________________________________________________________ An update that solves two vulnerabilities and has three fixes is now available. Description: This update for openssh fixes the following issues: Following security issues have been 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-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) Also the following security related hardening change was done: - Removed arcfour,blowfish,cast from list of default ciphers as they are long discontinued and should no longer be used. (bsc#982273) And the following non-security issues were fixed: - Stop leaking File descriptors (bsc#964336) - sftp-client.c returns wrong error code upon failure (bsc#1091396) 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-SP4: zypper in -t patch slessp4-openssh-13867=1 - SUSE Linux Enterprise Debuginfo 11-SP4: zypper in -t patch dbgsp4-openssh-13867=1 Package List: - SUSE Linux Enterprise Server 11-SP4 (i586 ia64 ppc64 s390x x86_64): openssh-6.6p1-36.6.1 openssh-askpass-gnome-6.6p1-36.6.1 openssh-fips-6.6p1-36.6.1 openssh-helpers-6.6p1-36.6.1 - SUSE Linux Enterprise Debuginfo 11-SP4 (i586 ia64 ppc64 s390x x86_64): openssh-askpass-gnome-debuginfo-6.6p1-36.6.1 openssh-debuginfo-6.6p1-36.6.1 openssh-debugsource-6.6p1-36.6.1 References: https://www.suse.com/security/cve/CVE-2018-15473.html https://www.suse.com/security/cve/CVE-2018-15919.html https://bugzilla.suse.com/1091396 https://bugzilla.suse.com/1105010 https://bugzilla.suse.com/1106163 https://bugzilla.suse.com/964336 https://bugzilla.suse.com/982273 ______________________________________________________________________________ SUSE Security Update: Security update for openssh ______________________________________________________________________________ Announcement ID: SUSE-SU-2018:3776-1 Rating: moderate References: #1091396 #1105010 #1106163 #964336 #982273 Cross-References: CVE-2018-15473 CVE-2018-15919 Affected Products: SUSE Linux Enterprise Server 12-SP1-LTSS SUSE Linux Enterprise Server 12-LTSS ______________________________________________________________________________ An update that solves two vulnerabilities and has three fixes is now available. Description: This update for openssh fixes the following issues: Following security issues have been 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-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) Also the following security related hardening change was done: - Remove arcfour,cast,blowfish from list of default ciphers. (bsc#982273) And the following non-security issues were fixed: - Stop leaking File descriptors (bsc#964336) - sftp-client.c returns wrong error code upon failure (bsc#1091396) 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 12-SP1-LTSS: zypper in -t patch SUSE-SLE-SERVER-12-SP1-2018-2698=1 - SUSE Linux Enterprise Server 12-LTSS: zypper in -t patch SUSE-SLE-SERVER-12-2018-2698=1 Package List: - SUSE Linux Enterprise Server 12-SP1-LTSS (ppc64le s390x x86_64): openssh-6.6p1-54.18.1 openssh-askpass-gnome-6.6p1-54.18.1 openssh-askpass-gnome-debuginfo-6.6p1-54.18.1 openssh-debuginfo-6.6p1-54.18.1 openssh-debugsource-6.6p1-54.18.1 openssh-fips-6.6p1-54.18.1 openssh-helpers-6.6p1-54.18.1 openssh-helpers-debuginfo-6.6p1-54.18.1 - SUSE Linux Enterprise Server 12-LTSS (ppc64le s390x x86_64): openssh-6.6p1-54.18.1 openssh-askpass-gnome-6.6p1-54.18.1 openssh-askpass-gnome-debuginfo-6.6p1-54.18.1 openssh-debuginfo-6.6p1-54.18.1 openssh-debugsource-6.6p1-54.18.1 openssh-fips-6.6p1-54.18.1 openssh-helpers-6.6p1-54.18.1 openssh-helpers-debuginfo-6.6p1-54.18.1 References: https://www.suse.com/security/cve/CVE-2018-15473.html https://www.suse.com/security/cve/CVE-2018-15919.html https://bugzilla.suse.com/1091396 https://bugzilla.suse.com/1105010 https://bugzilla.suse.com/1106163 https://bugzilla.suse.com/964336 https://bugzilla.suse.com/982273 - --------------------------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 iQIVAwUBW/II9GaOgq3Tt24GAQjtJA//TcpHRFo2cQoIc6TXe70ymcDOU6McueEH YsBOJOY4B0ELnCmgGveahq4RY+xeO6eq5MilRBKDu5VXhUJQEcsp/+QPWUqaEnr9 CCHSHQikg0wrRNbxZ0w43Jnrz8m28c1GCluzRSBEzN7/M/gUd6RCYzKlRHic15m2 bJF3P137xVHkup3QUCLNm9OuojFXc8UqHnBwQ+u0dTzqnIO3/15DJ4sCR/+Oy1C0 VEaW3bR2+m8V2R0ztGgZWVTS9ESShLSSc9F+5BzOn0ywjS2XnVigB4Pn19tqZ8dE +etx3Yj5ZccFP0t0/FCFfoe81B9tBOqk0KcDUlaUJR12fYX03Rcb3oQViLIhwrhx UHWQUrvMbPmC2/Y6iM5+cL69/WR2THwHGJKEH9SvU7XmwHTs1nMPTGJQJsolc8kX oTC3vtaU9WCnTuMMdL3BzkVGhIuZOrwmXTuLosV6IMRICFdz/YVtkRRTt6gT8zsG qblFM5OGrQMJLHvrm0a8yMGk349cOs4GK7X3KIgd+CT9RmFacyUDXiwXhIqTSB7O UoVyP7RwjTLuULE+uDRlN1J05DBqfwK4bpNEjyjbeGzVS+95Lm7MQ7cCA/53678z rRocDs7mfgv6ULsUkyBOxOGOUH+ywTYGtLYq6yjpv/BKWbIT2Uv6cH4YTCUxzMdX 0KonyYwDiZ0= =EmEt -----END PGP SIGNATURE-----