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CVE-2011-1093

7.8 · HIGH

The dccp_rcv_state_process function in net/dccp/input.c in the Datagram Congestion Control Protocol (DCCP) implementation in the Linux kernel before 2.6.38 does not properly handle packets for a CL…

Published Jul 18, 2011linuxCWE-476EPSS 3.48%

Overview

CVE-2011-1093 is a high-severity vulnerability affecting linux linux_kernel. It was published on July 18, 2011 and has a CVSS 2.0 base score of 7.8 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The dccp_rcv_state_process function in net/dccp/input.c in the Datagram Congestion Control Protocol (DCCP) implementation in the Linux kernel before 2.6.38 does not properly handle packets for a CLOSED endpoint, which allows remote attackers to cause a denial of service (NULL pointer dereference and OOPS) by sending a DCCP-Close packet followed by a DCCP-Reset packet.

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel 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
linuxlinux_kernel>= 0, < 2.6.38Affected

References

Refdownloads.avaya.com/css/P8/documents/100145416Refgit.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=720dc34bbbe9493c7bd48b2243058b4e447a929dRefopenwall.com/lists/oss-security/2011/03/08/19Refopenwall.com/lists/oss-security/2011/03/08/4Refrhn.redhat.com/errata/RHSA-2011-0833.htmlRefwww.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.38Refwww.securityfocus.com/bid/46793Refbugzilla.redhat.com/show_bug.cgi?id=682954Refdownloads.avaya.com/css/P8/documents/100145416Refgit.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=720dc34bbbe9493c7bd48b2243058b4e447a929d

How CyberStrike helps

Frequently asked questions

What is CVE-2011-1093?

CVE-2011-1093 is a high-severity vulnerability affecting linux linux_kernel. It was published on July 18, 2011 and has a CVSS 2.0 base score of 7.8 (HIGH).

How severe is CVE-2011-1093?

This vulnerability has a CVSS 2.0 base score of 7.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2011-1093?

Check the references section for vendor advisories and patches from linux. Update linux_kernel 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-2011-1093?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-1093 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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