CVE-2020-14934: Buffer Overflow
First published: Tue Aug 18 2020(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Contiki-ng Contiki-ng | >=4.4<=4.5 |
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Reference Links
Frequently Asked Questions
What is CVE-2020-14934?
CVE-2020-14934 is a vulnerability found in Contiki-NG 4.4 through 4.5 in the SNMP agent, which can lead to buffer overflows.
How severe is CVE-2020-14934?
CVE-2020-14934 has a severity level of 9.8 (critical).
What is the affected software for CVE-2020-14934?
The affected software for CVE-2020-14934 is Contiki-NG versions 4.4 through 4.5.
What is the CWE ID for CVE-2020-14934?
The CWE ID for CVE-2020-14934 is CWE-119 and CWE-787.
Where can I find more information about CVE-2020-14934?
You can find more information about CVE-2020-14934 at the following references: [Reference 1](https://drive.google.com/file/d/1NIf0Y0S47Lu85uSi29kt9tgSh0jYZYfj/view?usp=sharing), [Reference 2](https://github.com/contiki-ng/contiki-ng/issues/1352)
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