CVE-2020-17438
First published: Fri Dec 11 2020(Updated: )
An issue was discovered in uIP 1.0, as used in Contiki 3.0 and other products. The code that reassembles fragmented packets fails to properly validate the total length of an incoming packet specified in its IP header, as well as the fragmentation offset value specified in the IP header. By crafting a packet with specific values of the IP header length and the fragmentation offset, attackers can write into the .bss section of the program (past the statically allocated buffer that is used for storing the fragmented data) and cause a denial of service in uip_reass() in uip.c, or possibly execute arbitrary code on some target architectures.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Uip Project Uip | =1.0 | |
| Contiki-os Contiki | =3.0 | |
| Multiple (open source) picoTCP-NG, Version 1.7.0 and prior | ||
| Multiple (open source) picoTCP (EOL), Version 1.7.0 and prior | ||
| Multiple (open source) FNET, Version 4.6.3 | ||
| Multiple (open source) Nut/Net, Version 5.1 and prior |
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Reference Links
Frequently Asked Questions
What is CVE-2020-17438?
CVE-2020-17438 is a vulnerability in uIP 1.0, as used in Contiki 3.0 and other products, that allows for crafted packets to bypass proper validation, leading to potential security breaches.
What is the severity of CVE-2020-17438?
CVE-2020-17438 has a severity rating of 9.8 (critical).
How does CVE-2020-17438 impact Uip Project Uip?
CVE-2020-17438 affects Uip Project Uip 1.0, allowing for potential security breaches if not patched.
How does CVE-2020-17438 impact Contiki OS Contiki?
Contiki OS Contiki 3.0 is not vulnerable to CVE-2020-17438.
How can I fix CVE-2020-17438?
To fix CVE-2020-17438, it is recommended to apply the necessary patches provided by the software vendor or project maintainers.
- collector/nvd-index
- agent/type
- agent/last-modified-date
- agent/first-publish-date
- collector/ics-cert-advisory
- source/ICS
- agent/software-canonical-lookup
- agent/severity
- agent/weakness
- agent/author
- agent/references
- agent/softwarecombine
- agent/tags
- agent/event
- agent/description
- collector/mitre-cve
- source/MITRE
- vendor/uip project
- canonical/uip project uip
- version/uip project uip/1.0
- vendor/contiki-os
- canonical/contiki-os contiki
- version/contiki-os contiki/3.0
- vendor/multiple (open source)
- canonical/multiple (open source) picotcp-ng, version 1.7.0 and prior
- canonical/multiple (open source) picotcp (eol), version 1.7.0 and prior
- canonical/multiple (open source) fnet, version 4.6.3
- canonical/multiple (open source) nut/net, version 5.1 and prior