CVE-2020-17439

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Summary

CVECVE-2020-17439
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-12-11 23:15:00 UTC
Updated2020-12-15 15:36:00 UTC
DescriptionAn issue was discovered in uIP 1.0, as used in Contiki 3.0 and other products. The code that parses incoming DNS packets does not validate that the incoming DNS replies match outgoing DNS queries in newdata() in resolv.c. Also, arbitrary DNS replies are parsed if there was any outgoing DNS query with a transaction ID that matches the transaction ID of an incoming reply. Provided that the default DNS cache is quite small (only four records) and that the transaction ID has a very limited set of values that is quite easy to guess, this can lead to DNS cache poisoning.

Risk And Classification

Problem Types: CWE-20

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Contiki-os Contiki 3.0 All All All
Operating System Contiki-os Contiki 3.0 All All All
Application Uip Project Uip 1.0 All All All
Application Uip Project Uip 1.0 All All All

References

ReferenceSourceLinkTags
VU#815128 - Embedded TCP/IP stacks have memory corruption vulnerabilities MISC www.kb.cert.org Third Party Advisory, US Government Resource
Multiple Embedded TCP/IP Stacks | CISA MISC us-cert.cisa.gov Third Party Advisory, US Government Resource
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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