parisneo lollms up to 9.7 ExtensionBuilder.build_extension path traversal

Summaryinfo

A vulnerability marked as very critical has been reported in parisneo lollms up to 9.7. Impacted is the function ExtensionBuilder.build_extension. The manipulation leads to path traversal. This vulnerability is listed as CVE-2024-5443. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in parisneo lollms up to 9.7 and classified as very critical. This issue affects the function ExtensionBuilder.build_extension. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-29. The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize '\..\filename' (leading backslash dot dot) sequences that can resolve to a location that is outside of that directory. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

CVE-2024-4320 describes a vulnerability in the parisneo/lollms software, specifically within the `ExtensionBuilder().build_extension()` function. The vulnerability arises from the `/mount_extension` endpoint, where a path traversal issue allows attackers to navigate beyond the intended directory structure. This is facilitated by the `data.category` and `data.folder` parameters accepting empty strings (`""`), which, due to inadequate input sanitization, can lead to the construction of a `package_path` that points to the root directory. Consequently, if an attacker can create a `config.yaml` file in a controllable path, this path can be appended to the `extensions` list and trigger the execution of `__init__.py` in the current directory, leading to remote code execution. The vulnerability affects versions up to 5.9.0, and has been addressed in version 9.8.

It is possible to read the advisory at huntr.com. The identification of this vulnerability is CVE-2024-5443 since 05/28/2024. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/24/2024). The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

Upgrading to version 9.8 eliminates this vulnerability. Applying the patch 2d0c4e76be93195836ecd0948027e791b8a2626f 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.

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Productinfo

Vendor

• parisneo

Name

• lollms

Version

• 9.0
• 9.1
• 9.2
• 9.3
• 9.4
• 9.5
• 9.6
• 9.7

License

• open-source

Website

• Product: https://github.com/parisneo/lollms/

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CPE 2.2info

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