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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Affected versions of this package are vulnerable to Arbitrary File Write via Archive Extraction through the manipulation of file paths. An attacker could remotely overwrite any file on the host server and to exfiltrate any data from the host server. This can be abused to cause denial of service by overwriting critical system files, loss of private data, and remote code execution by downloading private ssh-keys.
Note:
Having full control over these zip files leads to two vulnerabilities:
The first is being able to overwrite any existing file on the system(e.g. the contents of the file is not "useful" to the attacker, but it can nevertheless be used to cause denial of service by overwriting critical system files).
The second vulnerability is achieved by using the built-in sshfs-client
of the project to mount an external directory, and write the zip file to that. This is an intended feature of the project, being a way of getting files off of the vulnerable system.