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Vulnerability record · CVE-2020-24334 · published 11 December 2020

CVE-2020-24334: Uip project uip out-of-bounds read vulnerability

Uip Project · Uip

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.

8.2 CVSS 3.1 High EPSS 2.4% · top 16.4% CWE-125 · Out-of-bounds read
8.2CVSS 3.1 base score, v2 6.4
2.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2020-17438Uip project uip out-of-bounds write vulnerabilityAn 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 validat…EPSS 19%8.3CVE-2020-17439Uip project uip improper input validation vulnerabilityAn 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 i…EPSS 3.2%8.2CVE-2020-17437Uip project uip out-of-bounds write vulnerabilityAn issue was discovered in uIP 1.0, as used in Contiki 3.0 and other products. When the Urgent flag is set in a TCP packet, and the stack is configur…EPSS 2.8%7.5CVE-2020-24335Uip project uip out-of-bounds read vulnerabilityAn issue was discovered in uIP through 1.0, as used in Contiki and Contiki-NG. Domain name parsing lacks bounds checks, allowing an attacker to corru…EPSS 3.0%7.5CVE-2020-17440Uip project uip vulnerabilityAn 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 domai…EPSS 2.8%7.5CVE-2020-13987Uip project uip out-of-bounds read vulnerabilityAn issue was discovered in Contiki through 3.0. An Out-of-Bounds Read vulnerability exists in the uIP TCP/IP Stack component when calculating the che…EPSS 3.3%8.8CVE-2026-11645Google Chrome V8 out-of-bounds read and write enables sandbox code executionGoogle Chrome before 149.0.7827.103 contains an out-of-bounds read and write in the V8 JavaScript engine. A crafted HTML page can trigger the memory …KEVEPSS 2.2%analysed7.8CVE-2023-36424Windows Common Log File System Driver out-of-bounds read privilege escalationCVE-2023-36424 is an out-of-bounds read (CWE-125) in the Windows Common Log File System (CLFS) driver that allows elevation of privilege. It affects …KEVEPSS 12%analysed

Source: NIST National Vulnerability Database (record CVE-2020-24334), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.