CVE-2020-17468
First published: Fri Dec 11 2020(Updated: )
An issue was discovered in FNET through 4.6.4. The code for processing the hop-by-hop header (in the IPv6 extension headers) doesn't check for a valid length of an extension header, and therefore an out-of-bounds read can occur in _fnet_ip6_ext_header_handler_options in fnet_ip6.c, leading to Denial-of-Service.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| <=4.6.4 | ||
| butok FNET | <=4.6.4 | |
| Contiki OS | ||
| Contiki-NG | ||
| uIP | ||
| SUSE Open-iSCSI | ||
| altran picoTCP-NG | ||
| picoTCP | ||
| butok FNET | ||
| Nut/Net |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2020-17468?
CVE-2020-17468 has a medium severity rating due to its potential to cause Denial of Service (DoS) by exploiting out-of-bounds read vulnerabilities.
How do I fix CVE-2020-17468?
To fix CVE-2020-17468, update your version of FNET to 4.6.5 or later, which addresses the identified vulnerability.
Which versions of FNET are affected by CVE-2020-17468?
CVE-2020-17468 affects FNET versions up to and including 4.6.4.
What is the impact of CVE-2020-17468 on system security?
The impact of CVE-2020-17468 is that it can lead to unexpected behavior or Denial of Service due to the handling of malformed IPv6 extension headers.
Is CVE-2020-17468 present in other software besides FNET?
Yes, CVE-2020-17468 is also present in various open-source projects that use the affected versions of the uIP and Contiki networking stacks.
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