-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: gdm and gnome-session security, bug fix, and enhancement update Advisory ID: RHSA-2017:2128-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2017:2128 Issue date: 2017-08-01 CVE Names: CVE-2015-7496 ===================================================================== 1. Summary: An update for gdm and gnome-session 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 Optional (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64 3. Description: The GNOME Display Manager (GDM) provides the graphical login screen shown shortly after boot up, log out, and when user-switching. The following packages have been upgraded to a later upstream version: gdm (3.22.3), gnome-session (3.22.3). (BZ#1386862, BZ#1386957) Security Fix(es): * It was found that gdm could crash due to a signal handler dispatched to an invalid conversation. An attacker could crash gdm by holding the escape key when the screen is locked, possibly bypassing the locked screen. (CVE-2015-7496) Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.4 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 GDM must be restarted for this update to take effect. 5. Bugs fixed (https://bugzilla.redhat.com/): 1273156 - GDM does not work with XDMCP indirect 1283279 - CVE-2015-7496 gdm: Crash when holding Escape in log screen 1373837 - gdm not starting because of error in config 1386862 - rebase gdm to 3.22.x 1386957 - rebase gnome-session to 3.22.x 1392970 - gnome-session-failed segfaults on hard GDM service stop 1448209 - Locked screen does not show a message to insert the smartcard when smartcard is removed 1449632 - Fuzzy translations in de, es, fr, it, ja, ko, pt_BR, ru, zh_CN, zh_TW 6. Package List: Red Hat Enterprise Linux Client (v. 7): Source: gdm-3.22.3-11.el7.src.rpm gnome-session-3.22.3-4.el7.src.rpm x86_64: gdm-3.22.3-11.el7.i686.rpm gdm-3.22.3-11.el7.x86_64.rpm gdm-debuginfo-3.22.3-11.el7.i686.rpm gdm-debuginfo-3.22.3-11.el7.x86_64.rpm gnome-session-3.22.3-4.el7.x86_64.rpm gnome-session-debuginfo-3.22.3-4.el7.x86_64.rpm gnome-session-xsession-3.22.3-4.el7.x86_64.rpm Red Hat Enterprise Linux Client Optional (v. 7): x86_64: gdm-debuginfo-3.22.3-11.el7.i686.rpm gdm-debuginfo-3.22.3-11.el7.x86_64.rpm gdm-devel-3.22.3-11.el7.i686.rpm gdm-devel-3.22.3-11.el7.x86_64.rpm gnome-session-custom-session-3.22.3-4.el7.x86_64.rpm gnome-session-debuginfo-3.22.3-4.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional (v. 7): Source: gdm-3.22.3-11.el7.src.rpm gnome-session-3.22.3-4.el7.src.rpm x86_64: gdm-3.22.3-11.el7.i686.rpm gdm-3.22.3-11.el7.x86_64.rpm gdm-debuginfo-3.22.3-11.el7.i686.rpm gdm-debuginfo-3.22.3-11.el7.x86_64.rpm gdm-devel-3.22.3-11.el7.i686.rpm gdm-devel-3.22.3-11.el7.x86_64.rpm gnome-session-3.22.3-4.el7.x86_64.rpm gnome-session-custom-session-3.22.3-4.el7.x86_64.rpm gnome-session-debuginfo-3.22.3-4.el7.x86_64.rpm gnome-session-xsession-3.22.3-4.el7.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: gdm-3.22.3-11.el7.src.rpm gnome-session-3.22.3-4.el7.src.rpm aarch64: gdm-3.22.3-11.el7.aarch64.rpm gdm-debuginfo-3.22.3-11.el7.aarch64.rpm gnome-session-3.22.3-4.el7.aarch64.rpm gnome-session-debuginfo-3.22.3-4.el7.aarch64.rpm gnome-session-xsession-3.22.3-4.el7.aarch64.rpm ppc64: gdm-3.22.3-11.el7.ppc.rpm gdm-3.22.3-11.el7.ppc64.rpm gdm-debuginfo-3.22.3-11.el7.ppc.rpm gdm-debuginfo-3.22.3-11.el7.ppc64.rpm gnome-session-3.22.3-4.el7.ppc64.rpm gnome-session-debuginfo-3.22.3-4.el7.ppc64.rpm gnome-session-xsession-3.22.3-4.el7.ppc64.rpm ppc64le: gdm-3.22.3-11.el7.ppc64le.rpm gdm-debuginfo-3.22.3-11.el7.ppc64le.rpm gnome-session-3.22.3-4.el7.ppc64le.rpm gnome-session-debuginfo-3.22.3-4.el7.ppc64le.rpm gnome-session-xsession-3.22.3-4.el7.ppc64le.rpm s390x: gdm-3.22.3-11.el7.s390.rpm gdm-3.22.3-11.el7.s390x.rpm gdm-debuginfo-3.22.3-11.el7.s390.rpm gdm-debuginfo-3.22.3-11.el7.s390x.rpm gnome-session-3.22.3-4.el7.s390x.rpm gnome-session-debuginfo-3.22.3-4.el7.s390x.rpm gnome-session-xsession-3.22.3-4.el7.s390x.rpm x86_64: gdm-3.22.3-11.el7.i686.rpm gdm-3.22.3-11.el7.x86_64.rpm gdm-debuginfo-3.22.3-11.el7.i686.rpm gdm-debuginfo-3.22.3-11.el7.x86_64.rpm gnome-session-3.22.3-4.el7.x86_64.rpm gnome-session-debuginfo-3.22.3-4.el7.x86_64.rpm gnome-session-xsession-3.22.3-4.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 7): aarch64: gdm-debuginfo-3.22.3-11.el7.aarch64.rpm gdm-devel-3.22.3-11.el7.aarch64.rpm gnome-session-custom-session-3.22.3-4.el7.aarch64.rpm gnome-session-debuginfo-3.22.3-4.el7.aarch64.rpm ppc64: gdm-debuginfo-3.22.3-11.el7.ppc.rpm gdm-debuginfo-3.22.3-11.el7.ppc64.rpm gdm-devel-3.22.3-11.el7.ppc.rpm gdm-devel-3.22.3-11.el7.ppc64.rpm gnome-session-custom-session-3.22.3-4.el7.ppc64.rpm gnome-session-debuginfo-3.22.3-4.el7.ppc64.rpm ppc64le: gdm-debuginfo-3.22.3-11.el7.ppc64le.rpm gdm-devel-3.22.3-11.el7.ppc64le.rpm gnome-session-custom-session-3.22.3-4.el7.ppc64le.rpm gnome-session-debuginfo-3.22.3-4.el7.ppc64le.rpm s390x: gdm-debuginfo-3.22.3-11.el7.s390.rpm gdm-debuginfo-3.22.3-11.el7.s390x.rpm gdm-devel-3.22.3-11.el7.s390.rpm gdm-devel-3.22.3-11.el7.s390x.rpm gnome-session-custom-session-3.22.3-4.el7.s390x.rpm gnome-session-debuginfo-3.22.3-4.el7.s390x.rpm x86_64: gdm-debuginfo-3.22.3-11.el7.i686.rpm gdm-debuginfo-3.22.3-11.el7.x86_64.rpm gdm-devel-3.22.3-11.el7.i686.rpm gdm-devel-3.22.3-11.el7.x86_64.rpm gnome-session-custom-session-3.22.3-4.el7.x86_64.rpm gnome-session-debuginfo-3.22.3-4.el7.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: gdm-3.22.3-11.el7.src.rpm gnome-session-3.22.3-4.el7.src.rpm x86_64: gdm-3.22.3-11.el7.i686.rpm gdm-3.22.3-11.el7.x86_64.rpm gdm-debuginfo-3.22.3-11.el7.i686.rpm gdm-debuginfo-3.22.3-11.el7.x86_64.rpm gnome-session-3.22.3-4.el7.x86_64.rpm gnome-session-debuginfo-3.22.3-4.el7.x86_64.rpm gnome-session-xsession-3.22.3-4.el7.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 7): x86_64: gdm-debuginfo-3.22.3-11.el7.i686.rpm gdm-debuginfo-3.22.3-11.el7.x86_64.rpm gdm-devel-3.22.3-11.el7.i686.rpm gdm-devel-3.22.3-11.el7.x86_64.rpm gnome-session-custom-session-3.22.3-4.el7.x86_64.rpm gnome-session-debuginfo-3.22.3-4.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-2015-7496 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/7.4_Release_Notes/index.html 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2017 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFZgQhcXlSAg2UNWIIRAh+QAJ9x/cEJb7R2OrGWlm/gvzqYeBW1eQCgpoCJ YkzevARIxIJGfct4NTRrBAQ= =6Gh/ -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce