CVE-2020-24337
First published: Fri Dec 11 2020(Updated: )
An issue was discovered in picoTCP and picoTCP-NG through 1.7.0. When an unsupported TCP option with zero length is provided in an incoming TCP packet, it is possible to cause a Denial-of-Service by achieving an infinite loop in the code that parses TCP options, aka tcp_parse_options() in pico_tcp.c.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Altran picoTCP | <=1.7.0 | |
| Altran Picotcp-ng | <=1.7.0 | |
| Multiple (open source) picoTCP-NG, Version 1.7.0 and prior | ||
| Multiple (open source) picoTCP (EOL), Version 1.7.0 and prior | ||
| Multiple (open source) FNET, Version 4.6.3 | ||
| Multiple (open source) Nut/Net, Version 5.1 and prior |
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Reference Links
Frequently Asked Questions
What is CVE-2020-24337?
CVE-2020-24337 is a vulnerability discovered in picoTCP and picoTCP-NG through 1.7.0 that allows for a Denial-of-Service attack by achieving an infinite loop.
What is the severity of CVE-2020-24337?
The severity of CVE-2020-24337 is high, with a CVSS score of 7.5.
Which software versions are affected by CVE-2020-24337?
The vulnerability affects picoTCP and picoTCP-NG versions up to and including 1.7.0.
How can I fix CVE-2020-24337?
To fix CVE-2020-24337, users should update their picoTCP and picoTCP-NG installations to a version beyond 1.7.0.
Where can I find more information about CVE-2020-24337?
More information about CVE-2020-24337 can be found at the following links: [US-CERT Advisory](https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01) and [CERT Vulnerability Note](https://www.kb.cert.org/vuls/id/815128).
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- vendor/altran
- canonical/altran picotcp
- version/altran picotcp/1.7.0
- canonical/altran picotcp-ng
- version/altran picotcp-ng/1.7.0
- vendor/multiple (open source)
- canonical/multiple (open source) picotcp-ng, version 1.7.0 and prior
- canonical/multiple (open source) picotcp (eol), version 1.7.0 and prior
- canonical/multiple (open source) fnet, version 4.6.3
- canonical/multiple (open source) nut/net, version 5.1 and prior