Oracle Linux 6 : system-config-firewall (ELSA-2011-0953)

medium Nessus Plugin ID 68307

Synopsis

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

Description

From Red Hat Security Advisory 2011:0953 :

Updated system-config-firewall 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.

system-config-firewall is a graphical user interface for basic firewall setup.

It was found that system-config-firewall used the Python pickle module in an insecure way when sending data (via D-Bus) to the privileged back-end mechanism. A local user authorized to configure firewall rules using system-config-firewall could use this flaw to execute arbitrary code with root privileges, by sending a specially crafted serialized object. (CVE-2011-2520)

Red Hat would like to thank Marco Slaviero of SensePost for reporting this issue.

This erratum updates system-config-firewall to use JSON (JavaScript Object Notation) for data exchange, instead of pickle. Therefore, an updated version of system-config-printer that uses this new communication data format is also provided in this erratum.

Users of system-config-firewall are advised to upgrade to these updated packages, which contain a backported patch to resolve this issue. Running instances of system-config-firewall must be restarted before the utility will be able to communicate with its updated back-end.

Solution

Update the affected system-config-firewall packages.

See Also

https://oss.oracle.com/pipermail/el-errata/2011-July/002233.html

Plugin Details

Severity: Medium

ID: 68307

File Name: oraclelinux_ELSA-2011-0953.nasl

Version: 1.10

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

Temporal Score: 4.4

Vector: CVSS2#AV:L/AC:H/Au:S/C:C/I:C/A:C

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:system-config-firewall, p-cpe:/a:oracle:linux:system-config-firewall-base, p-cpe:/a:oracle:linux:system-config-firewall-tui, p-cpe:/a:oracle:linux:system-config-printer, p-cpe:/a:oracle:linux:system-config-printer-libs, p-cpe:/a:oracle:linux:system-config-printer-udev, cpe:/o:oracle:linux:6

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/19/2011

Vulnerability Publication Date: 7/21/2011

Reference Information

CVE: CVE-2011-2520

BID: 48715

RHSA: 2011:0953