What’s Vulnerable › Vulnerabilities
CVE-2017-16654
- Severity: high (CVSS 7.5 v3.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 2.7% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2018-08-06 · updated 2026-06-17
- Weakness: CWE-22
Description
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 Linux: 8.0, 9.0
- symfony: from 2.7.0 through 2.7.37; from 3.2.0 through 3.2.13; from 3.3.0 through 3.3.12; from 3.8.0 through 3.8.30
References
- https://github.com/symfony/symfony/pull/24994
- 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://www.debian.org/security/2018/dsa-4262
- https://github.com/symfony/symfony/pull/24994
- 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://www.debian.org/security/2018/dsa-4262
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