CVE-2020-17444

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.45%
Third-Party Advisory cisa.gov Third-Party Advisory cert.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.kb.cert.org/vuls/id/815128 third party advisory us government resource
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01 third party advisory us government resource

Frequently Asked Questions

What is the severity of CVE-2020-17444?
CVE-2020-17444 has been scored as a high severity vulnerability.
How to fix CVE-2020-17444?
To fix CVE-2020-17444, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-17444 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-17444 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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