CVE-2020-14934 Memory corruption in n/a
Buffer overflow in Contiki-NG SNMP agent allows attackers to overwrite memory and potentially execute code on IoT devices.
- 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-2020-14934?
CVE-2020-14934 is a critical memory corruption vulnerability in n/a, published on 18 Aug 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Buffer overflows were discovered in Contiki-NG 4.4 through 4.5, in the SNMP agent. The function parsing the received SNMP request does not verify the input message's requested variables against the capacity of the internal SNMP engine buffer. If the number of variables in the request exceeds the allocated buffer, a memory write out of the buffer boundaries occurs. This write operation provides a possibility to overwrite other variables allocated in the .bss section by the application. Because the sender of the frame is in control of the content that will be written beyond the buffer limits, and there is no strict process memory separation, this issue may allow overwriting of sensitive memory areas of an IoT device.
Weakness: CWE-787
Which versions are affected by CVE-2020-14934?
It affects 1 product.
Products include Contiki-Ng Contiki-Ng.
How do I fix CVE-2020-14934?
No fix has been published for CVE-2020-14934 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-14934 being exploited?
There is no known exploitation of CVE-2020-14934 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-v2cg-frq6-hw49.