CVE-2020-17469 Null dereference in n/a
An uninitialized pointer dereference in FNET's IPv6 fragment reassembly allows remote attackers to cause 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-2020-17469?
CVE-2020-17469 is a high-severity 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 IPv6 fragment reassembly tries to access a previous fragment starting from a network incoming fragment that still doesn't have a reference to the previous one (which supposedly resides in the reassembly list). When faced with an incoming fragment that belongs to a non-empty fragment list, IPv6 reassembly must check that there are no empty holes between the fragments: this leads to an uninitialized pointer dereference in _fnet_ip6_reassembly in fnet_ip6.c, and causes Denial-of-Service.
Weakness: CWE-824
Which versions are affected by CVE-2020-17469?
It affects 1 product.
Products include Butok Fnet.
How do I fix CVE-2020-17469?
No fix has been published for CVE-2020-17469 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-17469 being exploited?
There is no known exploitation of CVE-2020-17469 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-ggpj-5v2h-5jrp.