Remote code execution in The Battle for Wesnoth

1) Code injection

EUVDB-ID: #VU14013

Risk: High

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-1999023

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

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

The vulnerability exists due to a code injection in the Lua scripting engine. A remote unauthenticated attacker can load a specially crafted saved games, networked games, replays, and player content to execute arbitrary code outside the sandbox.

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

Mitigation

Update to version 1.14.4.

Vulnerable software versions

The Battle for Wesnoth: before 1.14.4

External links

http://gist.github.com/shikadiqueen/45951ddc981cf8e0d9a74e4b30400380

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to open a a specially crafted file.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.