CVE-2017-16654: Debian Linux

High severity, CVSS 7.5. EPSS: 2.7% chance of exploitation in the next 30 days.

An issue was discovered in Symfony before 2.7.38, 2.8.31, 3.2.14, 3.3.13, 3.4-BETA5, and 4.0-BETA5. The Intl component includes various bundle readers that are used to read resource bundles from the local filesystem. The read() methods of these classes use a path and a locale to determine the language bundle to retrieve. The locale argument value is commonly retrieved from untrusted user input (like a URL parameter). An attacker can use this argument to navigate to arbitrary directories via the dot-dot-slash attack, aka Directory Traversal.

Affected products

• Debian Debian Linux: version 8.0 only; version 9.0 only
• Sensiolabs Symfony: from 2.7.0, up to and including 2.7.37; from 3.2.0, up to and including 3.2.13; from 3.3.0, up to and including 3.3.12; from 3.8.0, up to and including 3.8.30

Published 2018-08-06. Last modified 2026-06-17.