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Oracle Linux 6 : gdm (ELSA-2011-0395)

medium Nessus Plugin ID 68241

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Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

From Red Hat Security Advisory 2011:0395 :

Updated gdm packages that fix one security issue are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having moderate 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.

The GNOME Display Manager (GDM) provides the graphical login screen, shown shortly after boot up, log out, and when user-switching.

A race condition flaw was found in the way GDM handled the cache directories used to store users' dmrc and face icon files. A local attacker could use this flaw to trick GDM into changing the ownership of an arbitrary file via a symbolic link attack, allowing them to escalate their privileges. (CVE-2011-0727)

Red Hat would like to thank Sebastian Krahmer of the SuSE Security Team for reporting this issue.

All users should upgrade to these updated packages, which contain a backported patch to correct this issue. GDM must be restarted for this update to take effect. Rebooting achieves this, but changing the runlevel from 5 to 3 and back to 5 also restarts GDM.

Solution

Update the affected gdm packages.

See Also

https://oss.oracle.com/pipermail/el-errata/2011-March/002040.html

Plugin Details

Severity: Medium

ID: 68241

File Name: oraclelinux_ELSA-2011-0395.nasl

Version: 1.9

Type: local

Agent: unix

Published: 7/12/2013

Updated: 1/14/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.1

Vector: CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:gdm, p-cpe:/a:oracle:linux:gdm-libs, p-cpe:/a:oracle:linux:gdm-plugin-fingerprint, p-cpe:/a:oracle:linux:gdm-plugin-smartcard, p-cpe:/a:oracle:linux:gdm-user-switch-applet, cpe:/o:oracle:linux:6

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/OracleLinux

Exploit Ease: No known exploits are available

Patch Publication Date: 3/29/2011

Vulnerability Publication Date: 3/31/2011

Reference Information

CVE: CVE-2011-0727

BID: 47063

RHSA: 2011:0395