what you don't know can hurt you

AudioCode 400HD Remote Command Injection

AudioCode 400HD Remote Command Injection
Posted Jan 12, 2019
Authored by A. Baube

AudioCode 400HD IP phones suffer from a suffers from a remote command injection vulnerability.

tags | exploit, remote
advisories | CVE-2018-10093
MD5 | 006a6641d22ef5256e977981ad5ef5b5

AudioCode 400HD Remote Command Injection

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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


--
SYSDREAM Labs <labs@sysdream.com>

GPG :
47D1 E124 C43E F992 2A2E
1551 8EB4 8CD9 D5B2 59A1

* Website: https://sysdream.com/
* Twitter: @sysdream

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