Executive Summary
| Summary | |
|---|---|
| Title | system-config-firewall security update |
| Informations | |||
|---|---|---|---|
| Name | RHSA-2011:0953 | First vendor Publication | 2011-07-18 |
| Vendor | RedHat | Last vendor Modification | 2011-07-18 |
| Severity (Vendor) | Moderate | 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:H/Au:S/C:C/I:C/A:C) | |||
|---|---|---|---|
| Cvss Base Score | 6 | Attack Range | Local |
| Cvss Impact Score | 10 | Attack Complexity | High |
| Cvss Expoit Score | 1.5 | Authentication | Requires single instance |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| Problem Description: 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. 2. Relevant releases/architectures: Red Hat Enterprise Linux Desktop (v. 6) - i386, noarch, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - noarch Red Hat Enterprise Linux HPC Node Optional (v. 6) - noarch Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, noarch, x86_64 3. Description: 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. 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/kb/docs/DOC-11259 5. Bugs fixed (http://bugzilla.redhat.com/): 717985 - CVE-2011-2520 system-config-firewall: privilege escalation flaw via use of python pickle |
Original Source
| Url : https://rhn.redhat.com/errata/RHSA-2011-0953.html |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-502 | Deserialization of Untrusted Data |
OVAL Definitions
| Definition Id: oval:org.mitre.oval:def:21421 | |||
| Oval ID: | oval:org.mitre.oval:def:21421 | ||
| Title: | RHSA-2011:0953: system-config-firewall security update (Moderate) | ||
| Description: | fw_dbus.py in system-config-firewall 1.2.29 and earlier uses the pickle Python module unsafely during D-Bus communication between the GUI and the backend, which might allow local users to gain privileges via a crafted serialized object. | ||
| Family: | unix | Class: | patch |
| Reference(s): | RHSA-2011:0953-01 CVE-2011-2520 | Version: | 4 |
| Platform(s): | Red Hat Enterprise Linux 6 | Product(s): | system-config-firewall system-config-printer |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:23291 | |||
| Oval ID: | oval:org.mitre.oval:def:23291 | ||
| Title: | ELSA-2011:0953: system-config-firewall security update (Moderate) | ||
| Description: | fw_dbus.py in system-config-firewall 1.2.29 and earlier uses the pickle Python module unsafely during D-Bus communication between the GUI and the backend, which might allow local users to gain privileges via a crafted serialized object. | ||
| Family: | unix | Class: | patch |
| Reference(s): | ELSA-2011:0953-01 CVE-2011-2520 | Version: | 6 |
| Platform(s): | Oracle Linux 6 | Product(s): | system-config-firewall system-config-printer |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:28145 | |||
| Oval ID: | oval:org.mitre.oval:def:28145 | ||
| Title: | DEPRECATED: ELSA-2011-0953 -- system-config-firewall security update (moderate) | ||
| Description: | system-config-firewall: [1.2.27-3.3] - fixed possible privilege escalation flaw via use of python pickle (CVE-2011-2520), replaced pickle by json (rhbz#717985) - stop D-BUS firewall mechanism on update system-config-printer: [1.1.16-17:.2] - Build pycups with -fno-strict-aliasing compiler option to avoid compiler warnings. [1.1.16-17:.1] - Adapted to system-config-firewall API change (bug #717985, CVE-2011-2520). | ||
| Family: | unix | Class: | patch |
| Reference(s): | ELSA-2011-0953 CVE-2011-2520 | Version: | 4 |
| Platform(s): | Oracle Linux 6 | Product(s): | system-config-firewall system-config-printer |
| Definition Synopsis: | |||
| |||
CPE : Common Platform Enumeration
OpenVAS Exploits
| Date | Description |
|---|---|
| 2012-06-06 | Name : RedHat Update for system-config-firewall RHSA-2011:0953-01 File : nvt/gb_RHSA-2011_0953-01_system-config-firewall.nasl |
| 2011-08-12 | Name : Fedora Update for system-config-firewall FEDORA-2011-9652 File : nvt/gb_fedora_2011_9652_system-config-firewall_fc15.nasl |
Open Source Vulnerability Database (OSVDB)
| Id | Description |
|---|---|
| 73976 | system-config-firewall fw_dbus.py pickle Python Module Serialized Object Loca... |
Nessus® Vulnerability Scanner
| Date | Description |
|---|---|
| 2013-07-12 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2011-0953.nasl - Type : ACT_GATHER_INFO |
| 2012-08-01 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20110718_system_config_firewall_on_SL6_x.nasl - Type : ACT_GATHER_INFO |
| 2011-08-02 | Name : The remote Fedora host is missing a security update. File : fedora_2011-9652.nasl - Type : ACT_GATHER_INFO |
| 2011-07-19 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2011-0953.nasl - Type : ACT_GATHER_INFO |
Alert History
| Date | Informations |
|---|---|
| 2014-02-17 11:54:52 |
|
