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.

CVSS v3 8.2 HIGH
CVSS v2.0 6.4 MEDIUM

8.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact HIGH

Scope UNCHANGED

6.4^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:P/A:P

Exploitability : 10.0 / Impact : 4.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

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

Configurations

Configuration 1 (hide)

AND

cpe:2.3:a:uip_project:uip:*:*:*:*:*:*:*:*

OR	cpe:2.3:o:contiki-ng:contiki-ng:-:::::::*
	cpe:2.3:o:contiki-os:contiki:-:::::::*

History

No history.

Information

Published : 2020-12-11 23:15

Updated : 2023-12-10 13:41

NVD link : CVE-2020-24334

Mitre link : CVE-2020-24334

CVE.ORG link : CVE-2020-24334

JSON object : View

Products Affected

contiki-os

contiki

contiki-ng

contiki-ng

uip_project

uip

CWE

CWE-125

Out-of-bounds Read

{"id": "CVE-2020-24334", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 6.4, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 4.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.2, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 4.2, "exploitabilityScore": 3.9}]}, "published": "2020-12-11T23:15:13.807", "references": [{"url": "https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01", "tags": ["Third Party Advisory", "US Government Resource"], "source": "cve@mitre.org"}, {"url": "https://www.kb.cert.org/vuls/id/815128", "tags": ["Third Party Advisory", "US Government Resource"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-125"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "El c\u00f3digo que procesa las respuestas DNS en uIP versiones hasta 1.0, como es usado en Contiki y Contiki-NG, no verifica si el n\u00famero de respuestas especificadas en el encabezado del paquete DNS corresponde a los datos de respuesta disponibles en el paquete DNS, lo que conlleva a una lectura fuera de l\u00edmites y una Denegaci\u00f3n de Servicio en el archivo resolv.c"}], "lastModified": "2020-12-15T15:03:31.877", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:uip_project:uip:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "98518C5F-7D0A-4B03-A062-651E613A01BE", "versionEndIncluding": "1.0"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:contiki-ng:contiki-ng:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "DF2ECFDA-80E0-47DE-BB68-607CEB508140"}, {"criteria": "cpe:2.3:o:contiki-os:contiki:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "E5C40C6C-27AC-423A-8975-11C4290C4904"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cve@mitre.org"}