CVE-2017-5946

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-02-27 · updated 2026-06-17
Weakness: CWE-22

Description

The Zip::File component in the rubyzip gem before 1.2.1 for Ruby has a directory traversal vulnerability. If a site allows uploading of .zip files, an attacker can upload a malicious file that uses "../" pathname substrings to write arbitrary files to the filesystem.

Affected products

Debian Linux: 8.0, 9.0
Rubyzip Project Rubyzip: before 1.2.1 — fixed in 1.2.1

How to fix

Upgrade to a fixed version: Rubyzip Project Rubyzip 1.2.1. Check the vendor advisory for mitigations.

References

http://www.debian.org/security/2017/dsa-3801
http://www.securityfocus.com/bid/96445
https://github.com/rubyzip/rubyzip/issues/315
https://github.com/rubyzip/rubyzip/releases
http://www.debian.org/security/2017/dsa-3801
http://www.securityfocus.com/bid/96445
https://github.com/rubyzip/rubyzip/issues/315
https://github.com/rubyzip/rubyzip/releases

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