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CVE-2011-2520

7.8 · HIGH

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 priv…

Published Jul 21, 2011redhatCWE-502EPSS 0.42%

Overview

CVE-2011-2520 is a high-severity vulnerability affecting redhat system-config-firewall. It was published on July 21, 2011 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from redhat. Update system-config-firewall to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
redhatsystem-config-firewall0Affected

References

Reflists.fedoraproject.org/pipermail/package-announce/2011-August/063314.htmlRefsecunia.com/advisories/45294Refsecuritytracker.com/id?1025793Refwww.openwall.com/lists/oss-security/2011/07/18/6Refwww.redhat.com/support/errata/RHSA-2011-0953.htmlRefwww.securityfocus.com/bid/48715Refbugzilla.redhat.com/show_bug.cgi?id=717985Refexchange.xforce.ibmcloud.com/vulnerabilities/68734Reflists.fedoraproject.org/pipermail/package-announce/2011-August/063314.htmlRefsecunia.com/advisories/45294

How CyberStrike helps

Frequently asked questions

What is CVE-2011-2520?

CVE-2011-2520 is a high-severity vulnerability affecting redhat system-config-firewall. It was published on July 21, 2011 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2011-2520?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2011-2520?

Check the references section for vendor advisories and patches from redhat. Update system-config-firewall to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2011-2520?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-2520 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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