CVE-2020-24334

HIGH
8.2
CVSS Score
Published: December 11, 2020 at 10:42 PM UTC
Updated: June 17, 2026 at 03:05 AM UTC
1 product affected across 1 vendorUip· also runs on 2 platforms

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Severity
HIGH8.2
Exploit prediction
EPSS 2%

Description

The code that processes DNS responses in uIP through 1.0, as used in Contiki and Contiki-NG, does not check whether the number of responses specified in the DNS packet header corresponds to the response data available in the DNS packet, leading to an out-of-bounds read and Denial-of-Service in resolv.c.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 1.0
contiki-ng-contiki-ng (environment) · contiki-os-contiki (environment)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

x_refsource_MISCThird Party AdvisoryUS Government Resource
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01
x_refsource_MISCThird Party AdvisoryUS Government Resource
https://www.kb.cert.org/vuls/id/815128

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-125

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