Vulnerability identifier: #VU22868

Vulnerability risk: High

CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2018-17565

CWE-ID: CWE-78

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Grandstream Basic IP Phones firmware
Hardware solutions / Firmware
GXP1610
Hardware solutions / Routers & switches, VoIP, GSM, etc
GXP1615
Hardware solutions / Routers & switches, VoIP, GSM, etc
GXP1620
Hardware solutions / Routers & switches, VoIP, GSM, etc
GXP1625
Hardware solutions / Routers & switches, VoIP, GSM, etc
GXP1628
Hardware solutions / Routers & switches, VoIP, GSM, etc
GXP1630
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Grandstream Networks, Inc.

Description

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to Shell Metacharacter Injection in the SSH configuration interface. A remote unauthenticated attacker can execute arbitrary OS commands and gain a root shell on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Grandstream Basic IP Phones firmware: 1.0.1.10 - 1.0.4.128

GXP1610: All versions

GXP1615: All versions

GXP1620: All versions

GXP1625: All versions

GXP1628: All versions

GXP1630: All versions

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External links
http://grandstream.com/support/firmware
http://iridiumxor.wordpress.com/2019/01/03/three-simple-cves-for-a-good-voip-phone/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.