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CVE-2020-17444

7.5 · HIGH

An issue was discovered in picoTCP 1.7.0.

Published Dec 11, 2020CWE-20EPSS 2.83%

Overview

CVE-2020-17444 is a high-severity vulnerability. It was published on December 11, 2020 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

An issue was discovered in picoTCP 1.7.0. The routine for processing the next header field (and deducing whether the IPv6 extension headers are valid) doesn't check whether the header extension length field would overflow. Therefore, if it wraps around to zero, iterating through the extension headers will not increment the current data pointer. This leads to an infinite loop and Denial-of-Service in pico_ipv6_check_headers_sequence() in pico_ipv6.c.

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

CISAus-cert.cisa.gov/ics/advisories/icsa-20-343-01Refwww.kb.cert.org/vuls/id/815128CISAus-cert.cisa.gov/ics/advisories/icsa-20-343-01Refwww.kb.cert.org/vuls/id/815128

How CyberStrike helps

Frequently asked questions

What is CVE-2020-17444?

CVE-2020-17444 is a high-severity vulnerability. It was published on December 11, 2020 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2020-17444?

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-2020-17444?

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-2020-17444?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-17444 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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