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

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

07 Nov 2023, 03:32

Type	Values Removed	Values Added
References	~~{'url': 'https://hackmd.io/@aZYpdinUS2SD-yhAeHwOkw/ry-t4QfMu', 'name': 'https://hackmd.io/@aZYpdinUS2SD-yhAeHwOkw/ry-t4QfMu', 'tags': ['Exploit', 'Third Party Advisory'], 'refsource': 'MISC'}~~	() https://hackmd.io/%40aZYpdinUS2SD-yhAeHwOkw/ry-t4QfMu -

Information

Published : 2021-04-16 00:15

Updated : 2024-02-28 18:28

NVD link : CVE-2021-27692

Mitre link : CVE-2021-27692

CVE.ORG link : CVE-2021-27692

JSON object : View

Products Affected

tendacn

g3_firmware
g1
g3
g1_firmware

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-78

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

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