GHSA-c49r-8gj6-768r

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GHSA-c49r-8gj6-768r

Summary: Symfony Directory Traversal

Details: 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.

References: https://nvd.nist.gov/vuln/detail/CVE-2017-16654, https://github.com/symfony/symfony/pull/24994, https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/intl/CVE-2017-16654.yaml, https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2017-16654.yaml, https://github.com/symfony/symfony, https://lists.debian.org/debian-lts-announce/2019/03/msg00009.html, https://symfony.com/blog/cve-2017-16654-intl-bundle-readers-breaking-out-of-paths, https://symfony.com/cve-2017-16654, https://www.debian.org/security/2018/dsa-4262