Security update for openssh SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2018:3540-1 Final 1 1 2018-10-29T05:47:11Z current 2018-10-29T05:47:11Z 2018-10-29T05:47:11Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for openssh 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) The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). sleposp3-openssh-13848,slessp3-openssh-13848 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2018/suse-su-20183540-1/ Link for SUSE-SU-2018:3540-1 https://lists.suse.com/pipermail/sle-security-updates/2018-October/004804.html E-Mail link for SUSE-SU-2018:3540-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1016370 SUSE Bug 1016370 https://bugzilla.suse.com/1065000 SUSE Bug 1065000 https://bugzilla.suse.com/1076957 SUSE Bug 1076957 https://bugzilla.suse.com/1105010 SUSE Bug 1105010 https://bugzilla.suse.com/1105180 SUSE Bug 1105180 https://bugzilla.suse.com/1106163 SUSE Bug 1106163 https://bugzilla.suse.com/1106726 SUSE Bug 1106726 https://www.suse.com/security/cve/CVE-2016-10012/ SUSE CVE CVE-2016-10012 page https://www.suse.com/security/cve/CVE-2016-10708/ SUSE CVE CVE-2016-10708 page https://www.suse.com/security/cve/CVE-2017-15906/ SUSE CVE CVE-2017-15906 page https://www.suse.com/security/cve/CVE-2018-15473/ SUSE CVE CVE-2018-15473 page SUSE Linux Enterprise Point of Sale 11 SP3 SUSE Linux Enterprise Server 11 SP3-LTSS SUSE Linux Enterprise Server 11 SP3-TERADATA openssh-6.2p2-0.41.5.1 openssh-askpass-6.2p2-0.41.5.1 openssh-askpass-gnome-6.2p2-0.41.5.1 openssh-6.2p2-0.41.5.1 as a component of SUSE Linux Enterprise Point of Sale 11 SP3 openssh-askpass-6.2p2-0.41.5.1 as a component of SUSE Linux Enterprise Point of Sale 11 SP3 openssh-askpass-gnome-6.2p2-0.41.5.1 as a component of SUSE Linux Enterprise Point of Sale 11 SP3 openssh-6.2p2-0.41.5.1 as a component of SUSE Linux Enterprise Server 11 SP3-LTSS openssh-askpass-6.2p2-0.41.5.1 as a component of SUSE Linux Enterprise Server 11 SP3-LTSS openssh-askpass-gnome-6.2p2-0.41.5.1 as a component of SUSE Linux Enterprise Server 11 SP3-LTSS openssh-6.2p2-0.41.5.1 as a component of SUSE Linux Enterprise Server 11 SP3-TERADATA openssh-askpass-6.2p2-0.41.5.1 as a component of SUSE Linux Enterprise Server 11 SP3-TERADATA openssh-askpass-gnome-6.2p2-0.41.5.1 as a component of SUSE Linux Enterprise Server 11 SP3-TERADATA The shared memory manager (associated with pre-authentication compression) in sshd in OpenSSH before 7.4 does not ensure that a bounds check is enforced by all compilers, which might allows local users to gain privileges by leveraging access to a sandboxed privilege-separation process, related to the m_zback and m_zlib data structures. CVE-2016-10012 SUSE Linux Enterprise Point of Sale 11 SP3:openssh-6.2p2-0.41.5.1 SUSE Linux Enterprise Point of Sale 11 SP3:openssh-askpass-6.2p2-0.41.5.1 SUSE Linux Enterprise Point of Sale 11 SP3:openssh-askpass-gnome-6.2p2-0.41.5.1 SUSE Linux Enterprise Server 11 SP3-LTSS:openssh-6.2p2-0.41.5.1 SUSE Linux Enterprise Server 11 SP3-LTSS:openssh-askpass-6.2p2-0.41.5.1 SUSE Linux Enterprise Server 11 SP3-LTSS:openssh-askpass-gnome-6.2p2-0.41.5.1 SUSE Linux Enterprise Server 11 SP3-TERADATA:openssh-6.2p2-0.41.5.1 SUSE Linux Enterprise Server 11 SP3-TERADATA:openssh-askpass-6.2p2-0.41.5.1 SUSE Linux Enterprise Server 11 SP3-TERADATA:openssh-askpass-gnome-6.2p2-0.41.5.1 moderate 3.6 AV:N/AC:H/Au:S/C:P/I:P/A:N 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2018/suse-su-20183540-1/ https://www.suse.com/security/cve/CVE-2016-10012.html CVE-2016-10012 https://bugzilla.suse.com/1006166 SUSE Bug 1006166 https://bugzilla.suse.com/1016336 SUSE Bug 1016336 https://bugzilla.suse.com/1016369 SUSE Bug 1016369 https://bugzilla.suse.com/1016370 SUSE Bug 1016370 https://bugzilla.suse.com/1017870 SUSE Bug 1017870 https://bugzilla.suse.com/1026634 SUSE Bug 1026634 https://bugzilla.suse.com/1035742 SUSE Bug 1035742 https://bugzilla.suse.com/1073044 SUSE Bug 1073044 https://bugzilla.suse.com/1092582 SUSE Bug 1092582 https://bugzilla.suse.com/1138392 SUSE Bug 1138392 sshd in OpenSSH before 7.4 allows 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. CVE-2016-10708 SUSE Linux Enterprise Point of Sale 11 SP3:openssh-6.2p2-0.41.5.1 SUSE Linux Enterprise Point of Sale 11 SP3:openssh-askpass-6.2p2-0.41.5.1 SUSE Linux Enterprise Point of Sale 11 SP3:openssh-askpass-gnome-6.2p2-0.41.5.1 SUSE Linux Enterprise Server 11 SP3-LTSS:openssh-6.2p2-0.41.5.1 SUSE Linux Enterprise Server 11 SP3-LTSS:openssh-askpass-6.2p2-0.41.5.1 SUSE Linux Enterprise Server 11 SP3-LTSS:openssh-askpass-gnome-6.2p2-0.41.5.1 SUSE Linux Enterprise Server 11 SP3-TERADATA:openssh-6.2p2-0.41.5.1 SUSE Linux Enterprise Server 11 SP3-TERADATA:openssh-askpass-6.2p2-0.41.5.1 SUSE Linux Enterprise Server 11 SP3-TERADATA:openssh-askpass-gnome-6.2p2-0.41.5.1 moderate 5 AV:N/AC:L/Au:N/C:N/I:N/A:P To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2018/suse-su-20183540-1/ https://www.suse.com/security/cve/CVE-2016-10708.html CVE-2016-10708 https://bugzilla.suse.com/1076957 SUSE Bug 1076957 https://bugzilla.suse.com/1106726 SUSE Bug 1106726 https://bugzilla.suse.com/1138392 SUSE Bug 1138392 The process_open function in sftp-server.c in OpenSSH before 7.6 does not properly prevent write operations in readonly mode, which allows attackers to create zero-length files. CVE-2017-15906 SUSE Linux Enterprise Point of Sale 11 SP3:openssh-6.2p2-0.41.5.1 SUSE Linux Enterprise Point of Sale 11 SP3:openssh-askpass-6.2p2-0.41.5.1 SUSE Linux Enterprise Point of Sale 11 SP3:openssh-askpass-gnome-6.2p2-0.41.5.1 SUSE Linux Enterprise Server 11 SP3-LTSS:openssh-6.2p2-0.41.5.1 SUSE Linux Enterprise Server 11 SP3-LTSS:openssh-askpass-6.2p2-0.41.5.1 SUSE Linux Enterprise Server 11 SP3-LTSS:openssh-askpass-gnome-6.2p2-0.41.5.1 SUSE Linux Enterprise Server 11 SP3-TERADATA:openssh-6.2p2-0.41.5.1 SUSE Linux Enterprise Server 11 SP3-TERADATA:openssh-askpass-6.2p2-0.41.5.1 SUSE Linux Enterprise Server 11 SP3-TERADATA:openssh-askpass-gnome-6.2p2-0.41.5.1 moderate 4 AV:N/AC:L/Au:S/C:N/I:P/A:N 5 AV:N/AC:L/Au:N/C:N/I:P/A:N To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2018/suse-su-20183540-1/ https://www.suse.com/security/cve/CVE-2017-15906.html CVE-2017-15906 https://bugzilla.suse.com/1064285 SUSE Bug 1064285 https://bugzilla.suse.com/1065000 SUSE Bug 1065000 https://bugzilla.suse.com/1074115 SUSE Bug 1074115 https://bugzilla.suse.com/1079488 SUSE Bug 1079488 https://bugzilla.suse.com/1090163 SUSE Bug 1090163 https://bugzilla.suse.com/1099316 SUSE Bug 1099316 https://bugzilla.suse.com/1138392 SUSE Bug 1138392 OpenSSH through 7.7 is prone to a user enumeration 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. CVE-2018-15473 SUSE Linux Enterprise Point of Sale 11 SP3:openssh-6.2p2-0.41.5.1 SUSE Linux Enterprise Point of Sale 11 SP3:openssh-askpass-6.2p2-0.41.5.1 SUSE Linux Enterprise Point of Sale 11 SP3:openssh-askpass-gnome-6.2p2-0.41.5.1 SUSE Linux Enterprise Server 11 SP3-LTSS:openssh-6.2p2-0.41.5.1 SUSE Linux Enterprise Server 11 SP3-LTSS:openssh-askpass-6.2p2-0.41.5.1 SUSE Linux Enterprise Server 11 SP3-LTSS:openssh-askpass-gnome-6.2p2-0.41.5.1 SUSE Linux Enterprise Server 11 SP3-TERADATA:openssh-6.2p2-0.41.5.1 SUSE Linux Enterprise Server 11 SP3-TERADATA:openssh-askpass-6.2p2-0.41.5.1 SUSE Linux Enterprise Server 11 SP3-TERADATA:openssh-askpass-gnome-6.2p2-0.41.5.1 important 5 AV:N/AC:L/Au:N/C:P/I:N/A:N To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2018/suse-su-20183540-1/ https://www.suse.com/security/cve/CVE-2018-15473.html CVE-2018-15473 https://bugzilla.suse.com/1105010 SUSE Bug 1105010 https://bugzilla.suse.com/1106163 SUSE Bug 1106163 https://bugzilla.suse.com/1123133 SUSE Bug 1123133 https://bugzilla.suse.com/1138392 SUSE Bug 1138392 https://bugzilla.suse.com/1205621 SUSE Bug 1205621