Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Summary
Title ZyXEL pre-authentication command injection in weblogin.cgi
Informations
Name VU#498544 First vendor Publication 2020-02-26
Vendor VU-CERT Last vendor Modification 2020-02-26
Severity (Vendor) N/A Revision M

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 9.8
Base Score 9.8 Environmental Score 9.8
impact SubScore 5.9 Temporal Score 9.8
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 10 Attack Range Network
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Multiple ZyXEL devices contain a pre-authentication command injection vulnerability, which may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable device.

Original Source

Url : https://kb.cert.org/vuls/id/498544

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-78 Improper Sanitization of Special Elements used in an OS Command ('OS Command Injection') (CWE/SANS Top 25)

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 1
Os 2
Os 2
Os 2
Os 1
Os 1
Os 1
Os 1
Os 4
Os 4
Os 4
Os 2
Os 2
Os 4
Os 1
Os 4
Os 2
Os 2
Os 2
Os 2
Os 2
Os 1
Os 2
Os 2
Os 1
Os 1
Os 1

Snort® IPS/IDS

Date Description
2020-04-28 Zyxel NAS devices command injection attempt
RuleID : 53510 - Revision : 1 - Type : SERVER-WEBAPP
2020-04-28 Zyxel NAS devices command injection attempt
RuleID : 53509 - Revision : 1 - Type : SERVER-WEBAPP
2020-04-28 Zyxel NAS devices command injection attempt
RuleID : 53508 - Revision : 1 - Type : SERVER-WEBAPP
2020-04-28 Zyxel NAS devices command injection attempt
RuleID : 53507 - Revision : 1 - Type : SERVER-WEBAPP

Alert History

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0
1
Date Informations
2020-06-12 21:17:43
  • Multiple Updates
2020-05-23 13:15:41
  • First insertion