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CVE-2016-2070

7.5 · HIGH

The tcp_cwnd_reduction function in net/ipv4/tcp_input.c in the Linux kernel before 4.3.5 allows remote attackers to cause a denial of service (divide-by-zero error and system crash) via crafted TCP…

Published May 2, 2016CWE-189EPSS 3.32%

Overview

CVE-2016-2070 is a high-severity vulnerability. It was published on May 2, 2016 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The tcp_cwnd_reduction function in net/ipv4/tcp_input.c in the Linux kernel before 4.3.5 allows remote attackers to cause a denial of service (divide-by-zero error and system crash) via crafted TCP traffic.

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=8b8a321ff72c785ed5e8b4cf6eda20b35d427390Refwww.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.5Refwww.openwall.com/lists/oss-security/2016/01/25/5Refbugzilla.redhat.com/show_bug.cgi?id=1302219GitHubgithub.com/torvalds/linux/commit/8b8a321ff72c785ed5e8b4cf6eda20b35d427390Refgit.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8b8a321ff72c785ed5e8b4cf6eda20b35d427390Refwww.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.5Refwww.openwall.com/lists/oss-security/2016/01/25/5Refbugzilla.redhat.com/show_bug.cgi?id=1302219GitHubgithub.com/torvalds/linux/commit/8b8a321ff72c785ed5e8b4cf6eda20b35d427390

How CyberStrike helps

Frequently asked questions

What is CVE-2016-2070?

CVE-2016-2070 is a high-severity vulnerability. It was published on May 2, 2016 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2016-2070?

This vulnerability has a CVSS 3.1 base score of 7.5, 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-2016-2070?

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-2016-2070?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2016-2070 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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