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CVE-2017-15129

4.7 · MEDIUM

A use-after-free vulnerability was found in network namespaces code affecting the Linux kernel before 4.14.11.

Published Jan 9, 2018CWE-362EPSS 0.36%

Overview

CVE-2017-15129 is a medium-severity vulnerability. It was published on January 9, 2018 and has a CVSS 3.1 base score of 4.7 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

A use-after-free vulnerability was found in network namespaces code affecting the Linux kernel before 4.14.11. The function get_net_ns_by_id() in net/core/net_namespace.c does not check for the net::count value after it has found a peer network in netns_ids idr, which could lead to double free and memory corruption. This vulnerability could allow an unprivileged local user to induce kernel memory corruption on the system, leading to a crash. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although it is thought to be unlikely.

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

Refgit.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=21b5944350052d2583e82dd59b19a9ba94a007f0Refseclists.org/oss-sec/2018/q1/7Refwww.securityfocus.com/bid/102485Refaccess.redhat.com/errata/RHSA-2018:0654Refaccess.redhat.com/errata/RHSA-2018:0676Refaccess.redhat.com/errata/RHSA-2018:1062Refaccess.redhat.com/errata/RHSA-2019:1946Refaccess.redhat.com/security/cve/CVE-2017-15129Refbugzilla.redhat.com/show_bug.cgi?id=1531174GitHubgithub.com/torvalds/linux/commit/21b5944350052d2583e82dd59b19a9ba94a007f0

How CyberStrike helps

Frequently asked questions

What is CVE-2017-15129?

CVE-2017-15129 is a medium-severity vulnerability. It was published on January 9, 2018 and has a CVSS 3.1 base score of 4.7 (MEDIUM).

How severe is CVE-2017-15129?

This vulnerability has a CVSS 3.1 base score of 4.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2017-15129?

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-2017-15129?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-15129 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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