CVE-2021-27691

CVSS V2 High 10 CVSS V3 Critical 9.8
Description
Command Injection in Tenda G0 routers with firmware versions v15.11.0.6(9039)_CN and v15.11.0.5(5876)_CN , and 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/setDebugCfg request. This occurs because the "formSetDebugCfg" function executes glibc's system function with untrusted input.
Overview
  • CVE ID
  • CVE-2021-27691
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-04-16T00:15:12
  • Last Modified Date
  • 2022-07-12T17:42:04
Weakness Enumerations
CWE URL
CWE-119 http://cwe.mitre.org/data/definitions/119.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:tendacn:g0_firmware:15.11.0.5\(5876\)_cn:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:tendacn:g0_firmware:15.11.0.6\(9039\)_cn:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:tendacn:g0:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:tendacn:g1_firmware:15.11.0.16\(9024\)_cn:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:tendacn:g1_firmware:15.11.0.17\(9502\)_cn:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:tendacn:g1:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:tendacn:g3_firmware:15.11.0.16\(9024\)_cn:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:tendacn:g3_firmware:15.11.0.17\(9502\)_cn:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:tendacn:g3:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:C/I:C/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 10
  • Severity
  • HIGH
  • Exploitability Score
  • 10
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 9.8
  • Base Severity
  • CRITICAL
  • Exploitability Score
  • 3.9
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://hackmd.io/@aZYpdinUS2SD-yhAeHwOkw/rkhTCGzMd Exploit Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-27691
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-27691
History
Created Old Value New Value Data Type Notes
2022-05-10 07:14:34 Added to TrackCVE
2022-12-06 02:02:53 2021-04-16T00:15Z 2021-04-16T00:15:12 CVE Published Date updated
2022-12-06 02:02:53 2022-07-12T17:42:04 CVE Modified Date updated
2022-12-06 02:02:53 Analyzed Vulnerability Status updated