JCWasmx86 mesonlsp up to 4.1.3 Project path traversal

Summaryinfo

A vulnerability described as critical has been identified in JCWasmx86 mesonlsp up to 4.1.3. This affects an unknown part of the component Project Handler. The manipulation results in path traversal. This vulnerability is cataloged as CVE-2024-30254. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in JCWasmx86 mesonlsp up to 4.1.3. It has been classified as critical. Affected is an unknown code block of the component Project Handler. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

MesonLSP is an unofficial, unendorsed language server for meson written in C++. A vulnerability in versions prior to 4.1.4 allows overwriting arbitrary files if the attacker can make the victim either run the language server within a specific crafted project or `mesonlsp --full`. Version 4.1.4 contains a patch for this issue. As a workaround, avoid running `mesonlsp --full` and set the language server option `others.neverDownloadAutomatically` to `true`.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2024-30254 since 03/26/2024. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading to version 4.1.4 eliminates this vulnerability. Applying the patch 594b6334061371911cd59389124ab8af30ce0a3a is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• JCWasmx86

Name

• mesonlsp

Version

• 4.1.0
• 4.1.1
• 4.1.2
• 4.1.3

License

• open-source

Website

• Product: https://github.com/JCWasmx86/mesonlsp/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Once again VulDB remains the best source for vulnerability data.

Discussion