-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: krb5 security, bug fix, and enhancement update Advisory ID: RHSA-2018:0666-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:0666 Issue date: 2018-04-10 CVE Names: CVE-2017-7562 CVE-2017-11368 ===================================================================== 1. Summary: An update for krb5 is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. 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 Workstation (v. 7) - x86_64 Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) - aarch64, ppc64le, s390x 3. Description: Kerberos is a network authentication system, which can improve the security of your network by eliminating the insecure practice of sending passwords over the network in unencrypted form. It allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos key distribution center (KDC). Security Fix(es): * krb5: Authentication bypass by improper validation of certificate EKU and SAN (CVE-2017-7562) * krb5: Invalid S4U2Self or S4U2Proxy request causes assertion failure (CVE-2017-11368) 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 the updated packages, running Kerberos services (krb5kdc, kadmin, and kprop) will be restarted automatically. 5. Bugs fixed (https://bugzilla.redhat.com/): 1431198 - automatically add 'includedir /etc/krb5.conf.d/' to krb5.conf on update 1443388 - Please add the changes needed for the t_certauth.py test 1472956 - Add support to query the SSF of a context 1473560 - CVE-2017-11368 krb5: Invalid S4U2Self or S4U2Proxy request causes assertion failure 1485510 - CVE-2017-7562 krb5: Authentication bypass by improper validation of certificate EKU and SAN 6. Package List: Red Hat Enterprise Linux Client (v. 7): Source: krb5-1.15.1-18.el7.src.rpm x86_64: krb5-debuginfo-1.15.1-18.el7.i686.rpm krb5-debuginfo-1.15.1-18.el7.x86_64.rpm krb5-libs-1.15.1-18.el7.i686.rpm krb5-libs-1.15.1-18.el7.x86_64.rpm krb5-pkinit-1.15.1-18.el7.x86_64.rpm krb5-workstation-1.15.1-18.el7.x86_64.rpm libkadm5-1.15.1-18.el7.i686.rpm libkadm5-1.15.1-18.el7.x86_64.rpm Red Hat Enterprise Linux Client Optional (v. 7): x86_64: krb5-debuginfo-1.15.1-18.el7.i686.rpm krb5-debuginfo-1.15.1-18.el7.x86_64.rpm krb5-devel-1.15.1-18.el7.i686.rpm krb5-devel-1.15.1-18.el7.x86_64.rpm krb5-server-1.15.1-18.el7.x86_64.rpm krb5-server-ldap-1.15.1-18.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode (v. 7): Source: krb5-1.15.1-18.el7.src.rpm x86_64: krb5-debuginfo-1.15.1-18.el7.i686.rpm krb5-debuginfo-1.15.1-18.el7.x86_64.rpm krb5-libs-1.15.1-18.el7.i686.rpm krb5-libs-1.15.1-18.el7.x86_64.rpm krb5-pkinit-1.15.1-18.el7.x86_64.rpm krb5-workstation-1.15.1-18.el7.x86_64.rpm libkadm5-1.15.1-18.el7.i686.rpm libkadm5-1.15.1-18.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional (v. 7): x86_64: krb5-debuginfo-1.15.1-18.el7.i686.rpm krb5-debuginfo-1.15.1-18.el7.x86_64.rpm krb5-devel-1.15.1-18.el7.i686.rpm krb5-devel-1.15.1-18.el7.x86_64.rpm krb5-server-1.15.1-18.el7.x86_64.rpm krb5-server-ldap-1.15.1-18.el7.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: krb5-1.15.1-18.el7.src.rpm ppc64: krb5-debuginfo-1.15.1-18.el7.ppc.rpm krb5-debuginfo-1.15.1-18.el7.ppc64.rpm krb5-devel-1.15.1-18.el7.ppc.rpm krb5-devel-1.15.1-18.el7.ppc64.rpm krb5-libs-1.15.1-18.el7.ppc.rpm krb5-libs-1.15.1-18.el7.ppc64.rpm krb5-pkinit-1.15.1-18.el7.ppc64.rpm krb5-server-1.15.1-18.el7.ppc64.rpm krb5-server-ldap-1.15.1-18.el7.ppc64.rpm krb5-workstation-1.15.1-18.el7.ppc64.rpm libkadm5-1.15.1-18.el7.ppc.rpm libkadm5-1.15.1-18.el7.ppc64.rpm ppc64le: krb5-debuginfo-1.15.1-18.el7.ppc64le.rpm krb5-devel-1.15.1-18.el7.ppc64le.rpm krb5-libs-1.15.1-18.el7.ppc64le.rpm krb5-pkinit-1.15.1-18.el7.ppc64le.rpm krb5-server-1.15.1-18.el7.ppc64le.rpm krb5-server-ldap-1.15.1-18.el7.ppc64le.rpm krb5-workstation-1.15.1-18.el7.ppc64le.rpm libkadm5-1.15.1-18.el7.ppc64le.rpm s390x: krb5-debuginfo-1.15.1-18.el7.s390.rpm krb5-debuginfo-1.15.1-18.el7.s390x.rpm krb5-devel-1.15.1-18.el7.s390.rpm krb5-devel-1.15.1-18.el7.s390x.rpm krb5-libs-1.15.1-18.el7.s390.rpm krb5-libs-1.15.1-18.el7.s390x.rpm krb5-pkinit-1.15.1-18.el7.s390x.rpm krb5-server-1.15.1-18.el7.s390x.rpm krb5-server-ldap-1.15.1-18.el7.s390x.rpm krb5-workstation-1.15.1-18.el7.s390x.rpm libkadm5-1.15.1-18.el7.s390.rpm libkadm5-1.15.1-18.el7.s390x.rpm x86_64: krb5-debuginfo-1.15.1-18.el7.i686.rpm krb5-debuginfo-1.15.1-18.el7.x86_64.rpm krb5-devel-1.15.1-18.el7.i686.rpm krb5-devel-1.15.1-18.el7.x86_64.rpm krb5-libs-1.15.1-18.el7.i686.rpm krb5-libs-1.15.1-18.el7.x86_64.rpm krb5-pkinit-1.15.1-18.el7.x86_64.rpm krb5-server-1.15.1-18.el7.x86_64.rpm krb5-server-ldap-1.15.1-18.el7.x86_64.rpm krb5-workstation-1.15.1-18.el7.x86_64.rpm libkadm5-1.15.1-18.el7.i686.rpm libkadm5-1.15.1-18.el7.x86_64.rpm Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7): Source: krb5-1.15.1-18.el7.src.rpm aarch64: krb5-debuginfo-1.15.1-18.el7.aarch64.rpm krb5-devel-1.15.1-18.el7.aarch64.rpm krb5-libs-1.15.1-18.el7.aarch64.rpm krb5-pkinit-1.15.1-18.el7.aarch64.rpm krb5-server-1.15.1-18.el7.aarch64.rpm krb5-server-ldap-1.15.1-18.el7.aarch64.rpm krb5-workstation-1.15.1-18.el7.aarch64.rpm libkadm5-1.15.1-18.el7.aarch64.rpm ppc64le: krb5-debuginfo-1.15.1-18.el7.ppc64le.rpm krb5-devel-1.15.1-18.el7.ppc64le.rpm krb5-libs-1.15.1-18.el7.ppc64le.rpm krb5-pkinit-1.15.1-18.el7.ppc64le.rpm krb5-server-1.15.1-18.el7.ppc64le.rpm krb5-server-ldap-1.15.1-18.el7.ppc64le.rpm krb5-workstation-1.15.1-18.el7.ppc64le.rpm libkadm5-1.15.1-18.el7.ppc64le.rpm s390x: krb5-debuginfo-1.15.1-18.el7.s390.rpm krb5-debuginfo-1.15.1-18.el7.s390x.rpm krb5-devel-1.15.1-18.el7.s390.rpm krb5-devel-1.15.1-18.el7.s390x.rpm krb5-libs-1.15.1-18.el7.s390.rpm krb5-libs-1.15.1-18.el7.s390x.rpm krb5-pkinit-1.15.1-18.el7.s390x.rpm krb5-server-1.15.1-18.el7.s390x.rpm krb5-server-ldap-1.15.1-18.el7.s390x.rpm krb5-workstation-1.15.1-18.el7.s390x.rpm libkadm5-1.15.1-18.el7.s390.rpm libkadm5-1.15.1-18.el7.s390x.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: krb5-1.15.1-18.el7.src.rpm x86_64: krb5-debuginfo-1.15.1-18.el7.i686.rpm krb5-debuginfo-1.15.1-18.el7.x86_64.rpm krb5-devel-1.15.1-18.el7.i686.rpm krb5-devel-1.15.1-18.el7.x86_64.rpm krb5-libs-1.15.1-18.el7.i686.rpm krb5-libs-1.15.1-18.el7.x86_64.rpm krb5-pkinit-1.15.1-18.el7.x86_64.rpm krb5-server-1.15.1-18.el7.x86_64.rpm krb5-server-ldap-1.15.1-18.el7.x86_64.rpm krb5-workstation-1.15.1-18.el7.x86_64.rpm libkadm5-1.15.1-18.el7.i686.rpm libkadm5-1.15.1-18.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-2017-7562 https://access.redhat.com/security/cve/CVE-2017-11368 https://access.redhat.com/security/updates/classification/#moderate 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 iD8DBQFazHnvXlSAg2UNWIIRAgmIAJ0Qyk8Euo9tnwpVs2LOdTeB1+I9gwCbB6Uz kho/+IksjvaI9huTxRdZcyo= =4CCK -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce