CVE-2020-17468 Denial of service in n/a
An out-of-bounds read in the IPv6 extension header processing allows attackers to cause a denial of service in applications using the FNET library.
- 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-2020-17468?
CVE-2020-17468 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 FNET through 4.6.4. The code for processing the hop-by-hop header (in the IPv6 extension headers) doesn't check for a valid length of an extension header, and therefore an out-of-bounds read can occur in _fnet_ip6_ext_header_handler_options in fnet_ip6.c, leading to Denial-of-Service.
Weakness: CWE-125
Which versions are affected by CVE-2020-17468?
It affects 1 product.
Products include Butok Fnet.
How do I fix CVE-2020-17468?
No fix has been published for CVE-2020-17468 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-2020-17468 being exploited?
There is no known exploitation of CVE-2020-17468 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-r324-2rx8-5ggw.