CVE-2019-3979

RouterOS versions 6.45.6 Stable, 6.44.5 Long-term, and below are vulnerable to a DNS unrelated data attack. The router adds all A records to its DNS cache even when the records are unrelated to the domain that was queried. Therefore, a remote attacker controlled DNS server can poison the router's DNS cache via malicious responses with additional and untrue records.

CVSS v3 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://www.tenable.com/security/research/tra-2019-46	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:mikrotik:routeros:::::ltr:::*
	cpe:2.3:o:mikrotik:routeros:::::-:::*

History

No history.

Information

Published : 2019-10-29 19:15

Updated : 2023-12-10 13:13

NVD link : CVE-2019-3979

Mitre link : CVE-2019-3979

CVE.ORG link : CVE-2019-3979

JSON object : View

Products Affected

mikrotik

routeros

CWE

CWE-345

Insufficient Verification of Data Authenticity

{"id": "CVE-2019-3979", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "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": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2019-10-29T19:15:20.610", "references": [{"url": "https://www.tenable.com/security/research/tra-2019-46", "tags": ["Third Party Advisory"], "source": "vulnreport@tenable.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-345"}]}], "descriptions": [{"lang": "en", "value": "RouterOS versions 6.45.6 Stable, 6.44.5 Long-term, and below are vulnerable to a DNS unrelated data attack. The router adds all A records to its DNS cache even when the records are unrelated to the domain that was queried. Therefore, a remote attacker controlled DNS server can poison the router's DNS cache via malicious responses with additional and untrue records."}, {"lang": "es", "value": "RouterOS versi\u00f3n 6.45.6 Stable, RouterOS versi\u00f3n 6.44.5 Long-Term y anteriores, son vulnerables a un ataque de datos no relacionado con DNS. El router agrega todos los registros A a su memoria cach\u00e9 DNS incluso cuando los registros no est\u00e1n relacionados con el dominio que se consult\u00f3. Por lo tanto, un servidor DNS controlado por un atacante remoto puede envenenar la memoria cach\u00e9 DNS del router mediante respuestas maliciosas con registros adicionales y falsos."}], "lastModified": "2021-07-21T11:39:23.747", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:mikrotik:routeros:*:*:*:*:ltr:*:*:*", "vulnerable": true, "matchCriteriaId": "E96DA8A8-65E0-4D1C-A15B-8A4F7A0644A1", "versionEndIncluding": "6.44.5"}, {"criteria": "cpe:2.3:o:mikrotik:routeros:*:*:*:*:-:*:*:*", "vulnerable": true, "matchCriteriaId": "AA750EF2-6247-46CF-B800-C0417F6D35A5", "versionEndIncluding": "6.45.6"}], "operator": "OR"}]}], "sourceIdentifier": "vulnreport@tenable.com"}