CVE-2017-16654 Information

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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Reference

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

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

7.5