CVE-2021-27708

CVSS V2 High 10 CVSS V3 Critical 9.8
Description
Command Injection in TOTOLINK X5000R router with firmware v9.1.0u.6118_B20201102, and TOTOLINK A720R router with firmware v4.1.5cu.470_B20200911 allows remote attackers to execute arbitrary OS commands by sending a modified HTTP request. This occurs because the function executes glibc's system function with untrusted input. In the function, "command" parameter is directly passed to the attacker, allowing them to control the "command" field to attack the OS.
Overview
  • CVE ID
  • CVE-2021-27708
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-04-14T16:15:14
  • Last Modified Date
  • 2021-04-21T15:38:06
Weakness Enumerations
CWE URL
CWE-78 http://cwe.mitre.org/data/definitions/78.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:totolink:x5000r_firmware:9.1.0u.6118_b20201102:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:totolink:x5000r:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:totolink:a720r_firmware:4.1.5cu.470_b20200911:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:totolink:a720r:-:*:*:*:*:*:*:* 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/7FtB06f-SJ-SCfkMYcXYxA Exploit Third Party Advisory
https://hackmd.io/mDgIBvoxSPCZrZiZjfQGhw Exploit Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-27708
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-27708
History
Created Old Value New Value Data Type Notes
2022-05-10 07:14:58 Added to TrackCVE
2022-12-06 01:57:08 2021-04-14T16:15Z 2021-04-14T16:15:14 CVE Published Date updated
2022-12-06 01:57:08 2021-04-21T15:38:06 CVE Modified Date updated
2022-12-06 01:57:08 Analyzed Vulnerability Status updated