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CVE-2020-17442

7.5 · HIGH

An issue was discovered in picoTCP 1.7.0.

Published Dec 11, 2020CWE-190EPSS 3.09%

Overview

CVE-2020-17442 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 code for parsing the hop-by-hop IPv6 extension headers does not validate the bounds of the extension header length value, which may result in Integer Wraparound. Therefore, a crafted extension header length value may cause Denial-of-Service because it affects the loop in which the extension headers are parsed in pico_ipv6_process_hopbyhop() 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-2020-17442?

CVE-2020-17442 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-2020-17442?

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-2020-17442?

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-2020-17442?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-17442 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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