CVE-2017-16654

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.

How to fix CVE-2017-16654

To remediate CVE-2017-16654, upgrade the affected package to a fixed version below.

• —upgrade to 3.4.0+dfsg-1 or later
• —upgrade to 2.7.38 or later
• —upgrade to 2.7.38 or later

Is CVE-2017-16654 being exploited?

Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.

Affected packages (3)

• from 0, < 3.4.0+dfsg-1
• >= 2.7.0, < 2.7.38
• >= 2.7.0, < 2.7.38

CVSS scores

References (10)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2017-16654
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2017-16654
• PATCHgithub.com/symfony/symfony
• WEBgithub.com/FriendsOfPHP/security-advisories/blob/master/symfony/intl/CVE-2017-16654.yaml