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Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

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# [CVE-2018-10093] Remote command injection vulnerability in AudioCode IP phones

## Description

The AudioCodes 400HD series of IP phones consists in a range of
easy-to-use, feature-rich desktop devices for the service provider
hosted services, enterprise IP telephony and contact center markets.

The CGI scripts used on the 420HD phone (web interface) do not filter
user inputs correctly. Consequently, an authenticated attacker could
inject arbitrary commands (Remote Code Execution) and take full control
over the device. For example, it is possible to intercept live
communications.

## Vulnerability records


**CVE ID**: CVE-2018-10093

**Access Vector**: remote

**Security Risk**: medium

**Vulnerability**: CWE-78

**CVSS Base Score**: 7.2

**CVSS Vector String**:
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:H/RC:C


## Details

The script `command.cgi`, used for system monitoring and diagnostics, is
vulnerable to a remote command execution attack.

Visiting the `/command.cgi?cat%20/etc/passwd` gives the following result:

```
admin:$1$FZ6rOGS1$54ZXSmjh7nod.kXFRyLx70:0:0:root:/:/bin/sh
```

Note that the vulnerable page is only available to authenticated users
(in possession of the admin configuration password).

## Timeline (dd/mm/yyyy)

* 06/03/2018 : Initial discovery
* 17/04/2018 : Vendor contact
* 17/05/2018 : Vendor technical team aknowledgment
* 07/01/2019 : Vendor recommendation to mitigate the issue
* 10/01/2019 : Public disclosure

## Fixes

AudioCodes recommends to change the default admin credentials to
mitigate the issue.

## Affected versions

Theses vulnerabilities have only been tested on the 420HD phone
(firmware version: 2.2.12.126).

## Credits

a.baube at sysdream dot com