CVE-2020-17470 Weak cryptography in n/a
Predictable DNS transaction IDs in FNET allow attackers to perform DNS cache poisoning attacks.
- 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-2020-17470?
CVE-2020-17470 is a medium-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 that initializes the DNS client interface structure does not set sufficiently random transaction IDs (they are always set to 1 in _fnet_dns_poll in fnet_dns.c). This significantly simplifies DNS cache poisoning attacks.
Weakness: CWE-330
Which versions are affected by CVE-2020-17470?
It affects 1 product.
Products include Butok Fnet.
How do I fix CVE-2020-17470?
No fix has been published for CVE-2020-17470 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-17470 being exploited?
There is no known exploitation of CVE-2020-17470 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-p7pr-45q9-5m9w.