CVE-2020-14993

A stack-based buffer overflow on DrayTek Vigor2960, Vigor3900, and Vigor300B devices before 1.5.1.1 allows remote attackers to execute arbitrary code via the formuserphonenumber parameter in an authusersms action to mainfunction.cgi.

CVSS v3 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

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

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/dexterone/Vigor-poc	Exploit Third Party Advisory
https://www.draytek.com/about/security-advisory	Vendor Advisory
https://www.draytek.com/about/security-advisory/vigor3900-/-vigor2960-/-vigor300b-stack-based-buffer-overflow-vulnerability-%28cve-2020-14473%29

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:draytek:vigor300b_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:draytek:vigor300b:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:o:draytek:vigor2960_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:draytek:vigor2960:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND

cpe:2.3:o:draytek:vigor3900_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:draytek:vigor3900:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2020-06-23 12:15

Updated : 2024-02-04 21:00

NVD link : CVE-2020-14993

Mitre link : CVE-2020-14993

CVE.ORG link : CVE-2020-14993

JSON object : View

Products Affected

draytek

vigor300b_firmware
vigor2960
vigor300b
vigor2960_firmware
vigor3900_firmware
vigor3900

CWE

CWE-787

Out-of-bounds Write

{"id": "CVE-2020-14993", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 7.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "HIGH", "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": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "published": "2020-06-23T12:15:13.503", "references": [{"url": "https://github.com/dexterone/Vigor-poc", "tags": ["Exploit", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://www.draytek.com/about/security-advisory", "tags": ["Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "https://www.draytek.com/about/security-advisory/vigor3900-/-vigor2960-/-vigor300b-stack-based-buffer-overflow-vulnerability-%28cve-2020-14473%29", "source": "cve@mitre.org"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "A stack-based buffer overflow on DrayTek Vigor2960, Vigor3900, and Vigor300B devices before 1.5.1.1 allows remote attackers to execute arbitrary code via the formuserphonenumber parameter in an authusersms action to mainfunction.cgi."}, {"lang": "es", "value": "Un desbordamiento del b\u00fafer en la regi\u00f3n stack de la memoria en los dispositivos DrayTek Vigor2960, Vigor3900 y Vigor300B versiones anteriores a 1.5.1.1, permite a atacantes remotos ejecutar c\u00f3digo arbitrario por medio del par\u00e1metro formuserphonenumber en una acci\u00f3n authusersms en archivo mainfunction.cgi"}], "lastModified": "2023-11-07T03:17:23.410", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:draytek:vigor300b_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "145682DB-5518-43FD-8419-E0232566F3C4", "versionEndExcluding": "1.5.1.1"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:draytek:vigor300b:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "DA5B988D-ED1A-4CBF-8B34-C5B03A55ED52"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:draytek:vigor2960_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2AD4768B-73CE-4185-B676-71E1791F8D47", "versionEndExcluding": "1.5.1.1"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:draytek:vigor2960:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "8FDA3905-67DD-4F31-AFCF-014F1D7CCC1F"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:draytek:vigor3900_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9C71C769-6CEB-4377-85FB-8719626D04B5", "versionEndExcluding": "1.5.1.1"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:draytek:vigor3900:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "FEECFBBC-5551-4135-9194-4216A39B04B9"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cve@mitre.org"}