Battle for Wesnoth up to 1.14.3 Lua Scripting Engine code injection

Summaryinfo

A vulnerability identified as critical has been detected in Battle for Wesnoth up to 1.14.3. This vulnerability affects unknown code of the component Lua Scripting Engine. Performing a manipulation results in code injection. This vulnerability was named CVE-2018-1999023. The attack may be initiated remotely. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Battle for Wesnoth up to 1.14.3. This affects some unknown functionality of the component Lua Scripting Engine. The manipulation with an unknown input leads to a code injection vulnerability. CWE is classifying the issue as CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The Battle for Wesnoth Project version 1.7.0 through 1.14.3 contains a Code Injection vulnerability in the Lua scripting engine that can result in code execution outside the sandbox. This attack appear to be exploitable via Loading specially-crafted saved games, networked games, replays, and player content.

The bug was discovered 07/19/2018. The weakness was presented 07/23/2018 (GitHub Repository). It is possible to read the advisory at gist.github.com. This vulnerability is uniquely identified as CVE-2018-1999023 since 07/23/2018. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 111473 (Fedora 27 : wesnoth (2018-9c0b765d2d)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 277450 (Fedora Security Update for wesnoth (FEDORA-2018-dc339c6534)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (111473). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

• Battle for Wesnoth

Version

• 1.14.0
• 1.14.1
• 1.14.2
• 1.14.3

CPE 2.3info

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CPE 2.2info

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Be aware that VulDB is the high quality source for vulnerability data.

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