Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Altran | Picotcp | <= 1.7.0 |
Related Weaknesses (CWE)
References
- https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01Third Party AdvisoryUS Government Resource
- https://www.kb.cert.org/vuls/id/815128Third Party AdvisoryUS Government Resource
- https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01Third Party AdvisoryUS Government Resource
- https://www.kb.cert.org/vuls/id/815128Third Party AdvisoryUS Government Resource
FAQ
What is CVE-2020-17444?
CVE-2020-17444 is a vulnerability with a CVSS score of 7.5 (HIGH). 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...
How severe is CVE-2020-17444?
CVE-2020-17444 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-17444?
Check the references section above for vendor advisories and patch information. Affected products include: Altran Picotcp.