-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Low: openssh security, bug fix, and enhancement update Advisory ID: RHSA-2018:0980-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:0980 Issue date: 2018-04-10 CVE Names: CVE-2017-15906 ===================================================================== 1. Summary: An update for openssh is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Low. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Client (v. 7) - x86_64 Red Hat Enterprise Linux Client Optional (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64 Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) - aarch64, ppc64le, s390x Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) - aarch64, ppc64le, s390x 3. Description: OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server. Security Fix(es): * openssh: Improper write operations in readonly mode allow for zero-length file creation (CVE-2017-15906) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.5 Release Notes linked from the References section. 4. Solution: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing this update, the OpenSSH server daemon (sshd) will be restarted automatically. 5. Bugs fixed (https://bugzilla.redhat.com/): 1456853 - ssh -Q and -G list host key types that are not allowed in FIPS mode 1478175 - The UseDNS configuration option changed default behaviour between 7.3 and 7.4, this breaks existing configurations until manually corrected 1480510 - SSH connections get closed when time-based rekeyring is used and ClientAliveMaxCount=0 1488083 - segfaults when cleaning up session due to some error 1488982 - GSSAPIStrictAcceptorCheck default change with 7.4 1494268 - pam_ssh_agent_auth SEGV's if keyfile is missing 1496467 - Regression: SSH AuthorizedKeysCommand hangs when output is too large 1496808 - OpenSSH 7.4 doesn't work with WinSCP >= 5.10 clients 1506630 - CVE-2017-15906 openssh: Improper write operations in readonly mode allow for zero-length file creation 6. Package List: Red Hat Enterprise Linux Client (v. 7): Source: openssh-7.4p1-16.el7.src.rpm x86_64: openssh-7.4p1-16.el7.x86_64.rpm openssh-askpass-7.4p1-16.el7.x86_64.rpm openssh-clients-7.4p1-16.el7.x86_64.rpm openssh-debuginfo-7.4p1-16.el7.x86_64.rpm openssh-keycat-7.4p1-16.el7.x86_64.rpm openssh-server-7.4p1-16.el7.x86_64.rpm Red Hat Enterprise Linux Client Optional (v. 7): x86_64: openssh-cavs-7.4p1-16.el7.x86_64.rpm openssh-debuginfo-7.4p1-16.el7.i686.rpm openssh-debuginfo-7.4p1-16.el7.x86_64.rpm openssh-ldap-7.4p1-16.el7.x86_64.rpm openssh-server-sysvinit-7.4p1-16.el7.x86_64.rpm pam_ssh_agent_auth-0.10.3-2.16.el7.i686.rpm pam_ssh_agent_auth-0.10.3-2.16.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode (v. 7): Source: openssh-7.4p1-16.el7.src.rpm x86_64: openssh-7.4p1-16.el7.x86_64.rpm openssh-clients-7.4p1-16.el7.x86_64.rpm openssh-debuginfo-7.4p1-16.el7.x86_64.rpm openssh-keycat-7.4p1-16.el7.x86_64.rpm openssh-server-7.4p1-16.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional (v. 7): x86_64: openssh-askpass-7.4p1-16.el7.x86_64.rpm openssh-cavs-7.4p1-16.el7.x86_64.rpm openssh-debuginfo-7.4p1-16.el7.i686.rpm openssh-debuginfo-7.4p1-16.el7.x86_64.rpm openssh-ldap-7.4p1-16.el7.x86_64.rpm openssh-server-sysvinit-7.4p1-16.el7.x86_64.rpm pam_ssh_agent_auth-0.10.3-2.16.el7.i686.rpm pam_ssh_agent_auth-0.10.3-2.16.el7.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: openssh-7.4p1-16.el7.src.rpm ppc64: openssh-7.4p1-16.el7.ppc64.rpm openssh-askpass-7.4p1-16.el7.ppc64.rpm openssh-clients-7.4p1-16.el7.ppc64.rpm openssh-debuginfo-7.4p1-16.el7.ppc64.rpm openssh-keycat-7.4p1-16.el7.ppc64.rpm openssh-server-7.4p1-16.el7.ppc64.rpm ppc64le: openssh-7.4p1-16.el7.ppc64le.rpm openssh-askpass-7.4p1-16.el7.ppc64le.rpm openssh-clients-7.4p1-16.el7.ppc64le.rpm openssh-debuginfo-7.4p1-16.el7.ppc64le.rpm openssh-keycat-7.4p1-16.el7.ppc64le.rpm openssh-server-7.4p1-16.el7.ppc64le.rpm s390x: openssh-7.4p1-16.el7.s390x.rpm openssh-askpass-7.4p1-16.el7.s390x.rpm openssh-clients-7.4p1-16.el7.s390x.rpm openssh-debuginfo-7.4p1-16.el7.s390x.rpm openssh-keycat-7.4p1-16.el7.s390x.rpm openssh-server-7.4p1-16.el7.s390x.rpm x86_64: openssh-7.4p1-16.el7.x86_64.rpm openssh-askpass-7.4p1-16.el7.x86_64.rpm openssh-clients-7.4p1-16.el7.x86_64.rpm openssh-debuginfo-7.4p1-16.el7.x86_64.rpm openssh-keycat-7.4p1-16.el7.x86_64.rpm openssh-server-7.4p1-16.el7.x86_64.rpm Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7): Source: openssh-7.4p1-16.el7.src.rpm aarch64: openssh-7.4p1-16.el7.aarch64.rpm openssh-askpass-7.4p1-16.el7.aarch64.rpm openssh-clients-7.4p1-16.el7.aarch64.rpm openssh-debuginfo-7.4p1-16.el7.aarch64.rpm openssh-keycat-7.4p1-16.el7.aarch64.rpm openssh-server-7.4p1-16.el7.aarch64.rpm ppc64le: openssh-7.4p1-16.el7.ppc64le.rpm openssh-askpass-7.4p1-16.el7.ppc64le.rpm openssh-clients-7.4p1-16.el7.ppc64le.rpm openssh-debuginfo-7.4p1-16.el7.ppc64le.rpm openssh-keycat-7.4p1-16.el7.ppc64le.rpm openssh-server-7.4p1-16.el7.ppc64le.rpm s390x: openssh-7.4p1-16.el7.s390x.rpm openssh-askpass-7.4p1-16.el7.s390x.rpm openssh-clients-7.4p1-16.el7.s390x.rpm openssh-debuginfo-7.4p1-16.el7.s390x.rpm openssh-keycat-7.4p1-16.el7.s390x.rpm openssh-server-7.4p1-16.el7.s390x.rpm Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7): aarch64: openssh-cavs-7.4p1-16.el7.aarch64.rpm openssh-debuginfo-7.4p1-16.el7.aarch64.rpm openssh-ldap-7.4p1-16.el7.aarch64.rpm openssh-server-sysvinit-7.4p1-16.el7.aarch64.rpm pam_ssh_agent_auth-0.10.3-2.16.el7.aarch64.rpm ppc64le: openssh-cavs-7.4p1-16.el7.ppc64le.rpm openssh-debuginfo-7.4p1-16.el7.ppc64le.rpm openssh-ldap-7.4p1-16.el7.ppc64le.rpm openssh-server-sysvinit-7.4p1-16.el7.ppc64le.rpm pam_ssh_agent_auth-0.10.3-2.16.el7.ppc64le.rpm s390x: openssh-cavs-7.4p1-16.el7.s390x.rpm openssh-debuginfo-7.4p1-16.el7.s390.rpm openssh-debuginfo-7.4p1-16.el7.s390x.rpm openssh-ldap-7.4p1-16.el7.s390x.rpm openssh-server-sysvinit-7.4p1-16.el7.s390x.rpm pam_ssh_agent_auth-0.10.3-2.16.el7.s390.rpm pam_ssh_agent_auth-0.10.3-2.16.el7.s390x.rpm Red Hat Enterprise Linux Server Optional (v. 7): ppc64: openssh-cavs-7.4p1-16.el7.ppc64.rpm openssh-debuginfo-7.4p1-16.el7.ppc.rpm openssh-debuginfo-7.4p1-16.el7.ppc64.rpm openssh-ldap-7.4p1-16.el7.ppc64.rpm openssh-server-sysvinit-7.4p1-16.el7.ppc64.rpm pam_ssh_agent_auth-0.10.3-2.16.el7.ppc.rpm pam_ssh_agent_auth-0.10.3-2.16.el7.ppc64.rpm ppc64le: openssh-cavs-7.4p1-16.el7.ppc64le.rpm openssh-debuginfo-7.4p1-16.el7.ppc64le.rpm openssh-ldap-7.4p1-16.el7.ppc64le.rpm openssh-server-sysvinit-7.4p1-16.el7.ppc64le.rpm pam_ssh_agent_auth-0.10.3-2.16.el7.ppc64le.rpm s390x: openssh-cavs-7.4p1-16.el7.s390x.rpm openssh-debuginfo-7.4p1-16.el7.s390.rpm openssh-debuginfo-7.4p1-16.el7.s390x.rpm openssh-ldap-7.4p1-16.el7.s390x.rpm openssh-server-sysvinit-7.4p1-16.el7.s390x.rpm pam_ssh_agent_auth-0.10.3-2.16.el7.s390.rpm pam_ssh_agent_auth-0.10.3-2.16.el7.s390x.rpm x86_64: openssh-cavs-7.4p1-16.el7.x86_64.rpm openssh-debuginfo-7.4p1-16.el7.i686.rpm openssh-debuginfo-7.4p1-16.el7.x86_64.rpm openssh-ldap-7.4p1-16.el7.x86_64.rpm openssh-server-sysvinit-7.4p1-16.el7.x86_64.rpm pam_ssh_agent_auth-0.10.3-2.16.el7.i686.rpm pam_ssh_agent_auth-0.10.3-2.16.el7.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: openssh-7.4p1-16.el7.src.rpm x86_64: openssh-7.4p1-16.el7.x86_64.rpm openssh-askpass-7.4p1-16.el7.x86_64.rpm openssh-clients-7.4p1-16.el7.x86_64.rpm openssh-debuginfo-7.4p1-16.el7.x86_64.rpm openssh-keycat-7.4p1-16.el7.x86_64.rpm openssh-server-7.4p1-16.el7.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 7): x86_64: openssh-cavs-7.4p1-16.el7.x86_64.rpm openssh-debuginfo-7.4p1-16.el7.i686.rpm openssh-debuginfo-7.4p1-16.el7.x86_64.rpm openssh-ldap-7.4p1-16.el7.x86_64.rpm openssh-server-sysvinit-7.4p1-16.el7.x86_64.rpm pam_ssh_agent_auth-0.10.3-2.16.el7.i686.rpm pam_ssh_agent_auth-0.10.3-2.16.el7.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2017-15906 https://access.redhat.com/security/updates/classification/#low https://access.redhat.com/documentation/en-US/red_hat_enterprise_linux/7/html/7.5_release_notes/index.html 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2018 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFazHnIXlSAg2UNWIIRAh9tAKC1C5ozSUW6BZHLKp8q3KJ5wDzf2wCgnuNI N01gjH//4Q2H3S3eByRpihY= =brEf -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce