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CVE-2017-1000111

7.8 · HIGH

Linux kernel: heap out-of-bounds in AF_PACKET sockets.

Published Oct 5, 2017CWE-787EPSS 0.37%

Overview

CVE-2017-1000111 is a high-severity vulnerability. It was published on October 5, 2017 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

Linux kernel: heap out-of-bounds in AF_PACKET sockets. This new issue is analogous to previously disclosed CVE-2016-8655. In both cases, a socket option that changes socket state may race with safety checks in packet_set_ring. Previously with PACKET_VERSION. This time with PACKET_RESERVE. The solution is similar: lock the socket for the update. This issue may be exploitable, we did not investigate further. As this issue affects PF_PACKET sockets, it requires CAP_NET_RAW in the process namespace. But note that with user namespaces enabled, any process can create a namespace in which it has CAP_NET_RAW.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

Refwww.debian.org/security/2017/dsa-3981Refwww.securityfocus.com/bid/100267Refwww.securitytracker.com/id/1039132Refaccess.redhat.com/errata/RHSA-2017:2918Refaccess.redhat.com/errata/RHSA-2017:2930Refaccess.redhat.com/errata/RHSA-2017:2931Refaccess.redhat.com/errata/RHSA-2017:3200Refaccess.redhat.com/security/cve/cve-2017-1000111Refwww.debian.org/security/2017/dsa-3981Refwww.securityfocus.com/bid/100267

How CyberStrike helps

Frequently asked questions

What is CVE-2017-1000111?

CVE-2017-1000111 is a high-severity vulnerability. It was published on October 5, 2017 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2017-1000111?

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-2017-1000111?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2017-1000111?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-1000111 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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