7.8
HIGH
CVE-2011-2520
"system-config-firewall D-Bus Unauthenticate Remote Code Execution"
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.

INFO

Published Date :

July 21, 2011, 11:55 p.m.

Last Modified :

Jan. 21, 2024, 2:53 a.m.

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

1.8
Affected Products

The following products are affected by CVE-2011-2520 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Fedoraproject fedora
1 Redhat system-config-firewall
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2011-2520.

URL Resource
http://lists.fedoraproject.org/pipermail/package-announce/2011-August/063314.html Mailing List
http://secunia.com/advisories/45294 Not Applicable
http://securitytracker.com/id?1025793 Broken Link
http://www.openwall.com/lists/oss-security/2011/07/18/6 Mailing List
http://www.redhat.com/support/errata/RHSA-2011-0953.html Not Applicable
http://www.securityfocus.com/bid/48715 Broken Link
https://bugzilla.redhat.com/show_bug.cgi?id=717985 Issue Tracking
https://exchange.xforce.ibmcloud.com/vulnerabilities/68734 Third Party Advisory VDB Entry

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2011-2520 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2011-2520 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Jan. 21, 2024

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type http://lists.fedoraproject.org/pipermail/package-announce/2011-August/063314.html No Types Assigned http://lists.fedoraproject.org/pipermail/package-announce/2011-August/063314.html Mailing List
    Changed Reference Type http://secunia.com/advisories/45294 Vendor Advisory http://secunia.com/advisories/45294 Not Applicable
    Changed Reference Type http://securitytracker.com/id?1025793 No Types Assigned http://securitytracker.com/id?1025793 Broken Link
    Changed Reference Type http://www.openwall.com/lists/oss-security/2011/07/18/6 Patch http://www.openwall.com/lists/oss-security/2011/07/18/6 Mailing List
    Changed Reference Type http://www.redhat.com/support/errata/RHSA-2011-0953.html No Types Assigned http://www.redhat.com/support/errata/RHSA-2011-0953.html Not Applicable
    Changed Reference Type http://www.securityfocus.com/bid/48715 No Types Assigned http://www.securityfocus.com/bid/48715 Broken Link
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=717985 Patch https://bugzilla.redhat.com/show_bug.cgi?id=717985 Issue Tracking
    Changed Reference Type https://exchange.xforce.ibmcloud.com/vulnerabilities/68734 No Types Assigned https://exchange.xforce.ibmcloud.com/vulnerabilities/68734 Third Party Advisory, VDB Entry
    Removed CWE NIST CWE-264
    Added CWE NIST CWE-502
    Changed CPE Configuration OR *cpe:2.3:a:redhat:system-config-firewall:1.2.11:*:*:*:*:*:*:* *cpe:2.3:a:redhat:system-config-firewall:1.2.12:*:*:*:*:*:*:* *cpe:2.3:a:redhat:system-config-firewall:1.2.14:*:*:*:*:*:*:* *cpe:2.3:a:redhat:system-config-firewall:1.2.15:*:*:*:*:*:*:* *cpe:2.3:a:redhat:system-config-firewall:1.2.16:*:*:*:*:*:*:* *cpe:2.3:a:redhat:system-config-firewall:1.2.17:*:*:*:*:*:*:* *cpe:2.3:a:redhat:system-config-firewall:1.2.21:*:*:*:*:*:*:* *cpe:2.3:a:redhat:system-config-firewall:1.2.22:*:*:*:*:*:*:* *cpe:2.3:a:redhat:system-config-firewall:1.2.23:*:*:*:*:*:*:* *cpe:2.3:a:redhat:system-config-firewall:1.2.24:*:*:*:*:*:*:* *cpe:2.3:a:redhat:system-config-firewall:1.2.25:*:*:*:*:*:*:* *cpe:2.3:a:redhat:system-config-firewall:1.2.26:*:*:*:*:*:*:* *cpe:2.3:a:redhat:system-config-firewall:1.2.27:*:*:*:*:*:*:* *cpe:2.3:a:redhat:system-config-firewall:1.2.28:*:*:*:*:*:*:* *cpe:2.3:a:redhat:system-config-firewall:*:*:*:*:*:*:*:* versions up to (including) 1.2.29 OR *cpe:2.3:a:redhat:system-config-firewall:*:*:*:*:*:*:*:* versions up to (including) 1.2.29
    Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:15:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Feb. 13, 2023

    Action Type Old Value New Value
    Changed Description CVE-2011-2520 system-config-firewall: privilege escalation flaw via use of python pickle 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.
    Removed CVSS V2 Red Hat, Inc. (AV:L/AC:H/Au:S/C:C/I:C/A:C)
    Removed Reference https://access.redhat.com/errata/RHSA-2011:0953 [No Types Assigned]
    Removed Reference https://access.redhat.com/security/cve/CVE-2011-2520 [No Types Assigned]
  • CVE Modified by [email protected]

    Feb. 02, 2023

    Action Type Old Value New Value
    Changed 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. CVE-2011-2520 system-config-firewall: privilege escalation flaw via use of python pickle
    Added CVSS V2 Red Hat, Inc. (AV:L/AC:H/Au:S/C:C/I:C/A:C)
    Added Reference https://access.redhat.com/security/cve/CVE-2011-2520 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2011:0953 [No Types Assigned]
  • CVE Modified by [email protected]

    Aug. 29, 2017

    Action Type Old Value New Value
    Removed Reference http://xforce.iss.net/xforce/xfdb/68734 [No Types Assigned]
    Added Reference https://exchange.xforce.ibmcloud.com/vulnerabilities/68734 [No Types Assigned]
  • Initial Analysis by [email protected]

    Jul. 22, 2011

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2011-2520 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2011-2520 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.04 }} 0.00%

score

0.05635

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability