CVE-2021-27692

Command Injection in Tenda G1 and G3 routers with firmware versions v15.11.0.17(9502)_CN or v15.11.0.16(9024)_CN allows remote attackers to execute arbitrary OS commands via a crafted "action/umountUSBPartition" request. This occurs because the "formSetUSBPartitionUmount" function executes the "doSystemCmd" function with untrusted input.

CVSS v3 9.8 CRITICAL
CVSS v2.0 10.0 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

10.0^/10

CVSS v2.0 : HIGH

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

Exploitability : 10.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://hackmd.io/%40aZYpdinUS2SD-yhAeHwOkw/ry-t4QfMu
https://hackmd.io/%40aZYpdinUS2SD-yhAeHwOkw/ry-t4QfMu

Configurations

Configuration 1 (hide)

AND

OR	cpe:2.3:o:tendacn:g1_firmware:15.11.0.16\(9024\)_cn:::::::*
	cpe:2.3:o:tendacn:g1_firmware:15.11.0.17\(9502\)_cn:::::::*

cpe:2.3:h:tendacn:g1:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

OR	cpe:2.3:o:tendacn:g3_firmware:15.11.0.16\(9024\)_cn:::::::*
	cpe:2.3:o:tendacn:g3_firmware:15.11.0.17\(9502\)_cn:::::::*

cpe:2.3:h:tendacn:g3:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-04-16 00:15

Updated : 2024-11-21 05:58

NVD link : CVE-2021-27692

Mitre link : CVE-2021-27692

CVE.ORG link : CVE-2021-27692

JSON object : View

Products Affected

tendacn

g3_firmware
g3
g1
g1_firmware

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

{"id": "CVE-2021-27692", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 10.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C", "authentication": "NONE", "integrityImpact": "COMPLETE", "accessComplexity": "LOW", "availabilityImpact": "COMPLETE", "confidentialityImpact": "COMPLETE"}, "acInsufInfo": false, "impactScore": 10.0, "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": "2021-04-16T00:15:12.067", "references": [{"url": "https://hackmd.io/%40aZYpdinUS2SD-yhAeHwOkw/ry-t4QfMu", "source": "cve@mitre.org"}, {"url": "https://hackmd.io/%40aZYpdinUS2SD-yhAeHwOkw/ry-t4QfMu", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-78"}, {"lang": "en", "value": "CWE-119"}]}], "descriptions": [{"lang": "en", "value": "Command Injection in Tenda G1 and G3 routers with firmware versions v15.11.0.17(9502)_CN or v15.11.0.16(9024)_CN allows remote attackers to execute arbitrary OS commands via a crafted \"action/umountUSBPartition\" request. This occurs because the \"formSetUSBPartitionUmount\" function executes the \"doSystemCmd\" function with untrusted input."}, {"lang": "es", "value": "La inyecci\u00f3n de comandos en enrutadores Tenda G1 y G3 con versiones de firmware v15.11.0.17(9502) _CN o v15.11.0.16(9024) _CN, permite a atacantes remotos ejecutar comandos arbitrarios del sistema operativo a trav\u00e9s de una petici\u00f3n \"action/umountUSBPartition\" dise\u00f1ada. Esto ocurre porque la funci\u00f3n \"formSetUSBPartitionUmount\" ejecuta la funci\u00f3n \"doSystemCmd\" con una entrada no confiable"}], "lastModified": "2024-11-21T05:58:26.020", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:tendacn:g1_firmware:15.11.0.16\\(9024\\)_cn:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "10886B9B-E33E-4748-93BB-3617EF40BF3D"}, {"criteria": "cpe:2.3:o:tendacn:g1_firmware:15.11.0.17\\(9502\\)_cn:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F1F4A805-B82C-4815-9999-E2D971E082E8"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:tendacn:g1:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "6839E6D3-4F3E-40FB-828E-D25088E85A21"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:tendacn:g3_firmware:15.11.0.16\\(9024\\)_cn:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "91B52B9F-BBF3-4BDD-8CF1-C253959E4182"}, {"criteria": "cpe:2.3:o:tendacn:g3_firmware:15.11.0.17\\(9502\\)_cn:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "67707336-51C8-428B-B4E2-084302C5806D"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:tendacn:g3:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "0A5CDD3E-C5D2-44DF-B330-065CF8ECC29B"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cve@mitre.org"}