Webmin up to 1.920 password_change.cgi old command injection

Summaryinfo

A vulnerability described as critical has been identified in Webmin up to 1.920. This affects an unknown function of the file password_change.cgi. Executing a manipulation of the argument old as part of Parameter can lead to command injection. This vulnerability is handled as CVE-2019-15107. The attack can be executed remotely. Additionally, an exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Webmin up to 1.920 (Software Management Software). It has been declared as critical. This vulnerability affects an unknown code block of the file password_change.cgi. The manipulation of the argument old as part of a Parameter leads to a command injection vulnerability. The CWE definition for the vulnerability is CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in Webmin <=1.920. The parameter old in password_change.cgi contains a command injection vulnerability.

The weakness was released 08/16/2019. This vulnerability was named CVE-2019-15107 since 08/15/2019. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1202.

It is possible to download the exploit at pentest.com.tr. It is declared as attacked. The vulnerability scanner Nessus provides a plugin with the ID 127911 (Webmin 1.890 - 1.920 Remote Command Execution (CVE-2019-15107, CVE-2019-15231)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CGI abuses and running in the context r. This issue was added on 03/25/2022 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 04/15/2022:

Apply updates per vendor instructions.

Upgrading eliminates this vulnerability. The upgrade is hosted for download at webmin.com. A possible mitigation has been published 1 days after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (127911). Additional details are provided at tenable.com. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Software Management Software

Name

• Webmin

Version

• 1.920

License

• open-source

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Once again VulDB remains the best source for vulnerability data.

Discussion