Executive Summary
| Summary | |
|---|---|
| Title | gdm security update |
| Informations | |||
|---|---|---|---|
| Name | RHSA-2013:1213 | First vendor Publication | 2013-09-05 |
| Vendor | RedHat | Last vendor Modification | 2013-09-05 |
| Severity (Vendor) | Important | Revision | 01 |
Security-Database Scoring CVSS v3
| Cvss vector : N/A | |||
|---|---|---|---|
| Overall CVSS Score | NA | ||
| Base Score | NA | Environmental Score | NA |
| impact SubScore | NA | Temporal Score | NA |
| Exploitabality Sub Score | NA | ||
| Calculate full CVSS 3.0 Vectors scores | |||
Security-Database Scoring CVSS v2
| Cvss vector : (AV:L/AC:M/Au:N/C:C/I:C/A:C) | |||
|---|---|---|---|
| Cvss Base Score | 6.9 | Attack Range | Local |
| Cvss Impact Score | 10 | Attack Complexity | Medium |
| Cvss Expoit Score | 3.4 | Authentication | None Required |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| Problem Description: Updated gdm and initscripts packages that fix one security issue are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64 Red Hat Enterprise Linux Desktop (v. 5 client) - i386, 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. A race condition was found in the way GDM handled the X server sockets directory located in the system temporary directory. An unprivileged user could use this flaw to perform a symbolic link attack, giving them write access to any file, allowing them to escalate their privileges to root. (CVE-2013-4169) Note that this erratum includes an updated initscripts package. To fix CVE-2013-4169, the vulnerable code was removed from GDM and the initscripts package was modified to create the affected directory safely during the system boot process. Therefore, this update will appear on all systems, however systems without GDM installed are not affected by this flaw. Red Hat would like to thank the researcher with the nickname vladz for reporting this issue. All users should upgrade to these updated packages, which correct this issue. The system must be rebooted for this update to take effect. 4. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/site/articles/11258 5. Bugs fixed (http://bugzilla.redhat.com/): 988498 - CVE-2013-4169 gdm: TOCTTOU race condition on /tmp/.X11-unix |
Original Source
| Url : https://rhn.redhat.com/errata/RHSA-2013-1213.html |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-59 | Improper Link Resolution Before File Access ('Link Following') |
OVAL Definitions
| Definition Id: oval:org.mitre.oval:def:21234 | |||
| Oval ID: | oval:org.mitre.oval:def:21234 | ||
| Title: | RHSA-2013:1213: gdm security update (Important) | ||
| Description: | GNOME Display Manager (gdm) before 2.21.1 allows local users to change permissions of arbitrary directories via a symlink attack on /tmp/.X11-unix/. | ||
| Family: | unix | Class: | patch |
| Reference(s): | RHSA-2013:1213-00 CESA-2013:1213 CVE-2013-4169 | Version: | 4 |
| Platform(s): | Red Hat Enterprise Linux 5 CentOS Linux 5 | Product(s): | gdm initscripts |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:23089 | |||
| Oval ID: | oval:org.mitre.oval:def:23089 | ||
| Title: | ELSA-2013:1213: gdm security update (Important) | ||
| Description: | GNOME Display Manager (gdm) before 2.21.1 allows local users to change permissions of arbitrary directories via a symlink attack on /tmp/.X11-unix/. | ||
| Family: | unix | Class: | patch |
| Reference(s): | ELSA-2013:1213-00 CVE-2013-4169 | Version: | 6 |
| Platform(s): | Oracle Linux 5 | Product(s): | gdm initscripts |
| Definition Synopsis: | |||
| Definition Id: oval:org.mitre.oval:def:27417 | |||
| Oval ID: | oval:org.mitre.oval:def:27417 | ||
| Title: | DEPRECATED: ELSA-2013-1213 -- gdm security update (important) | ||
| Description: | gdm [2.16.0-59.0.1.el5_9.1] - Fix gdmconfig memory leaks [orabug 12734629] [2.16.0-59.1] - Don't try to pre-create directories that are internal implementation details of X. Resolves: #997619 CVE-2013-4169 initscripts [8.45.42-2.0.1.el5_9.1] - Do not rename eth devices. Orabug 14266688. Apply upstream patches: 0001-Remove-reference-to-rename_device.patch 0002-rename_device-dequote-DEVICE-eth0.patch 0003-dont_try_to_rename_devices.patch - change the ifup-eth and ifdown-eth script to use default leases file of dhclient. [Orabug 12434590] - Update oracle-enterprise.patch to do detection on /etc/oracle-release and /etc/enterprise-release - Patch x86_64 sysctl.conf as well as default sysctl.conf - Patch sysctl.conf to default rp_filter to loose reverse path filtering (has no effect for pre-2.6.32 kernels) [orabug 10286227] - Move hwclock into udev rules - Update oracle-enterprise.patch to fix RedHat references in arch specific sysctl.conf files in source tarball - Add oracle-enterprise.patch and update specfile - Don't attempt to re-enslave already-enslaved devices (#455537) (pknirsch@redhat.com) [8.45.42-2.1] - create /tmp/.X11-unix in rc.sysinit (#997622, CVE-2013-4169) [8.45.42-2] - added missing '-p p' for kpartx in netfs (#844671) | ||
| Family: | unix | Class: | patch |
| Reference(s): | ELSA-2013-1213 CVE-2013-4169 | Version: | 4 |
| Platform(s): | Oracle Linux 5 | Product(s): | gdm initscripts |
| Definition Synopsis: | |||
CPE : Common Platform Enumeration
Nessus® Vulnerability Scanner
| Date | Description |
|---|---|
| 2013-09-07 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2013-1213.nasl - Type : ACT_GATHER_INFO |
| 2013-09-06 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2013-1213.nasl - Type : ACT_GATHER_INFO |
| 2013-09-06 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2013-1213.nasl - Type : ACT_GATHER_INFO |
| 2013-09-06 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20130905_gdm_on_SL5_x.nasl - Type : ACT_GATHER_INFO |
Alert History
| Date | Informations |
|---|---|
| 2014-02-17 11:57:25 |
|
| 2013-09-12 13:24:30 |
|
| 2013-09-11 17:26:20 |
|
| 2013-09-11 00:22:48 |
|
| 2013-09-06 00:20:07 |
|
