#VU26575 Code Injection in PlaySMS - CVE-2020-8644

Vulnerability identifier: #VU26575

Vulnerability risk: High

CVSSv4.0: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber]

CVE-ID: CVE-2020-8644

CWE-ID: CWE-94

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
PlaySMS
Mobile applications / Apps for mobile phones

Vendor: playsms.sourceforge.net

Description

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

The vulnerability exists due to improper input validation in "src/Playsms/Tpl.php:_compile()" that leads to server-side template injection. A remote non-authenticated attacker can send a specially crafted request and execute arbitrary code 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

PlaySMS: 1.4 - 1.4.2

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External links
https://forum.playsms.org/t/playsms-1-4-3-has-been-released/2704
https://playsms.org/2020/02/05/playsms-1-4-3-has-been-released/
https://research.nccgroup.com/2020/02/11/technical-advisory-playsms-pre-authentication-remote-code-execution-cve-2020-8644/

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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?

Yes. This vulnerability is being exploited in the wild.