CVE-2021-27706 - OpenCVE

Buffer Overflow in Tenda G1 and G3 routers with firmware version V15.11.0.17(9502)_CN allows remote attackers to execute arbitrary code via a crafted action/"IPMacBindIndex "request. This occurs because the "formIPMacBindDel" function directly passes the parameter "IPMacBindIndex" to strcpy without limit.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

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

Vendors & Products
CPE Configurations

Vendors	Products
Tenda	G1 Firmware G3 G3 Firmware G1

Configuration 1 [-]

AND

cpe:2.3:o:tenda:g1_firmware:v15.11.0.17\(9502\)_cn:*:*:*:*:*:*:*

cpe:2.3:h:tenda:g1:-:*:*:*:*:*:*:*

Configuration 2 [-]

AND

cpe:2.3:o:tenda:g3_firmware:v15.11.0.17\(9502\)_cn:*:*:*:*:*:*:*

cpe:2.3:h:tenda:g3:-:*:*:*:*:*:*:*

References

Link	Resource
https://hackmd.io/BhzJ4H20TjqKUiBrDOIKaw	Exploit Third Party Advisory

History

No history.

MITRE Information

Status: PUBLISHED

Assigner: mitre

Published: 2021-04-14T14:55:39

Updated: 2021-04-14T14:55:38

Reserved: 2021-02-25T00:00:00

Link: CVE-2021-27706

JSON object: View

NVD Information

Status : Analyzed

Published: 2021-04-14T15:15:14.033

Modified: 2021-04-20T21:43:34.577

Link: CVE-2021-27706

JSON object: View

Redhat Information

No data.

CWE

CWE-120

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:tenda:g1_firmware:v15.11.0.17\\(9502\\)_cn:*:*:*:*:*:*:*", "matchCriteriaId": "98669DBF-D56B-4E2D-9A12-813CEC185170", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:tenda:g1:-:*:*:*:*:*:*:*", "matchCriteriaId": "FD313047-8A0F-44BD-A75B-F4CF2F4DD8F6", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:tenda:g3_firmware:v15.11.0.17\\(9502\\)_cn:*:*:*:*:*:*:*", "matchCriteriaId": "01254E20-AFFD-4A1A-A956-36BFD85017D4", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:tenda:g3:-:*:*:*:*:*:*:*", "matchCriteriaId": "7A1B3B7C-2164-40B6-959A-188796737C16", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "descriptions": [{"lang": "en", "value": "Buffer Overflow in Tenda G1 and G3 routers with firmware version V15.11.0.17(9502)_CN allows remote attackers to execute arbitrary code via a crafted action/\"IPMacBindIndex \"request. This occurs because the \"formIPMacBindDel\" function directly passes the parameter \"IPMacBindIndex\" to strcpy without limit."}, {"lang": "es", "value": "Un desbordamiento de b\u00fafer en los enrutadores Tenda G1 y G3 con versi\u00f3n de firmware V15.11.0.17(9502) _CN permite a atacantes remotos ejecutar c\u00f3digo arbitrario por medio de una petici\u00f3n dise\u00f1ada action/\"IPMacBindIndex\". Esto ocurre porque la funci\u00f3n \"formIPMacBindDel\" pasa directamente el par\u00e1metro \"IPMacBindIndex\" a strcpy sin l\u00edmite"}], "id": "CVE-2021-27706", "lastModified": "2021-04-20T21:43:34.577", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-04-14T15:15:14.033", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://hackmd.io/BhzJ4H20TjqKUiBrDOIKaw"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-120"}], "source": "nvd@nist.gov", "type": "Primary"}]}