CVE-2020-24334
CVE-2020-24334 is a high-severity vulnerability in Uip Project Uip with a CVSS 3.x base score of 8.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.
Key facts
- Severity: High (CVSS 3.x base score 8.2)
- CVSS v2: 6.4
- EPSS exploit prediction: 2% (82nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-125
- Affected product: Uip Project Uip
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2020-24334?
- 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.
- How severe is CVE-2020-24334?
- CVE-2020-24334 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability high.
- Is CVE-2020-24334 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-24334?
- CVE-2020-24334 affects Uip Project Uip. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-24334?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2020-24334 published?
- CVE-2020-24334 was published on 2020-12-11 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:uip_project:uip:*:*:*:*:*:*:*:*
More vulnerabilities in Uip Project Uip
- CVE-2020-17438 — Critical (CVSS 9.8): An issue was discovered in uIP 1.0, as used in Contiki 3.0 and other products. The code that reassembles fragmented…
- CVE-2020-17439 — High (CVSS 8.3): An issue was discovered in uIP 1.0, as used in Contiki 3.0 and other products. The code that parses incoming DNS…
- CVE-2020-17437 — High (CVSS 8.2): An 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…
- CVE-2020-24335 — High (CVSS 7.5): An issue was discovered in uIP through 1.0, as used in Contiki and Contiki-NG. Domain name parsing lacks bounds checks,…
- CVE-2020-17440 — High (CVSS 7.5): An issue was discovered in uIP 1.0, as used in Contiki 3.0 and other products. The code that parses incoming DNS…
- CVE-2020-13987 — High (CVSS 7.5): An issue was discovered in Contiki through 3.0. An Out-of-Bounds Read vulnerability exists in the uIP TCP/IP Stack…
All CVEs affecting Uip Project Uip →
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