IPCop up to 2.1.9 Web-based Administration Interface EMAIL_PW os command injection

Summaryinfo

A vulnerability marked as critical has been reported in IPCop up to 2.1.9. This impacts an unknown function of the component Web-based Administration Interface. This manipulation of the argument EMAIL_PW causes os command injection. This vulnerability only affects products that are no longer supported by the maintainer. The identification of this vulnerability is CVE-2021-4466. It is possible to initiate the attack remotely. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability was found in IPCop up to 2.1.9. It has been declared as critical. Affected by this vulnerability is an unknown code of the component Web-based Administration Interface. The manipulation of the argument EMAIL_PW with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

IPCop versions up to and including 2.1.9 contain an authenticated remote code execution vulnerability within the web-based administration interface. The email configuration component inserts user-controlled values, including the EMAIL_PW parameter, directly into system-level operations without proper input sanitation. By modifying the email password field to include shell metacharacters and issuing a save-and-test-mail action, an authenticated attacker can execute arbitrary operating system commands with the privileges of the web interface, resulting in full system compromise.

The weakness was shared by Mücahit Saratar as 50183. It is possible to read the advisory at exploit-db.com. This vulnerability is known as CVE-2021-4466 since 11/14/2025. The exploitation appears to be easy. The attack can be launched remotely. Technical details and also a public exploit are known. The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Exploit-DB (50183) and EUVD (EUVD-2021-34717). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

• IPCop

Version

• 2.1.0
• 2.1.1
• 2.1.2
• 2.1.3
• 2.1.4
• 2.1.5
• 2.1.6
• 2.1.7
• 2.1.8
• 2.1.9

Support

• end of life

CPE 2.3info

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CPE 2.2info

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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