CVE-2020-24334 Denial of service in n/a
Attackers can cause a denial of service in Contiki devices by sending malformed DNS responses that trigger an out-of-bounds read in the uIP stack.
- 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-2020-24334?
CVE-2020-24334 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
The code that processes DNS responses in uIP through 1.0, as used in Contiki and Contiki-NG, does not check whether the number of responses specified in the DNS packet header corresponds to the response data available in the DNS packet, leading to an out-of-bounds read and Denial-of-Service in resolv.c.
Weakness: CWE-125
Which versions are affected by CVE-2020-24334?
It affects 1 product.
Products include Uip Project Uip.
How do I fix CVE-2020-24334?
No fix has been published for CVE-2020-24334 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-2020-24334 being exploited?
There is no known exploitation of CVE-2020-24334 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-38jp-4v3p-cc3q.