Arbitrary File Write via Archive Extraction (Zip Slip) Affecting lollms package, versions [9.3.0,9.5.1)
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Test your applications- Snyk ID SNYK-PYTHON-LOLLMS-7361778
- published 24 Jun 2024
- disclosed 22 Jun 2024
- credit Nhien.IT
Introduced: 22 Jun 2024
CVE-2024-5443 Open this link in a new tabHow to fix?
Upgrade lollms to version 9.5.1 or higher.
Overview
lollms is a python library for AI personality definition
Affected versions of this package are vulnerable to Arbitrary File Write via Archive Extraction (Zip Slip) via the ExtensionBuilder().build_extension() function and the /mount_extension endpoint. An attacker can execute arbitrary code by manipulating the data.category and data.folder parameters to navigate beyond the intended directory structure and create or append malicious configurations to the extensions list.
Details
It is exploited using a specially crafted zip archive, that holds path traversal filenames. When exploited, a filename in a malicious archive is concatenated to the target extraction directory, which results in the final path ending up outside of the target folder. For instance, a zip may hold a file with a "../../file.exe" location and thus break out of the target folder. If an executable or a configuration file is overwritten with a file containing malicious code, the problem can turn into an arbitrary code execution issue quite easily.
The following is an example of a zip archive with one benign file and one malicious file. Extracting the malicous file will result in traversing out of the target folder, ending up in /root/.ssh/ overwriting the authorized_keys file:
+2018-04-15 22:04:29 ..... 19 19 good.txt
+2018-04-15 22:04:42 ..... 20 20 ../../../../../../root/.ssh/authorized_keys