CVE-2020-17444 Denial of service in n/a
An integer overflow in picoTCP's IPv6 header processing causes an infinite loop, leading to a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-17444?
CVE-2020-17444 is a high-severity denial of service vulnerability in n/a, published on 11 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2020-17444?
It affects 1 product.
Products include Altran Picotcp.
How do I fix CVE-2020-17444?
No fix has been published for CVE-2020-17444 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2020-17444 being exploited?
There is no known exploitation of CVE-2020-17444 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-6927-m748-j36j.