Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Potential URI resolution path traversal in the aws/aws-sdk-php. Within the scope of requests to S3 object keys and/or prefixes containing a Unix double-dot, a URI path traversal is possible. The issue exists in the "buildEndpoint" method in the "RestSerializer" component of the AWS SDK for PHP v3 prior to 3.288.1. The "buildEndpoint" method relies on the Guzzle Psr7 "UriResolver" utility, which strips dot segments from the request path in accordance with RFC 3986. Under certain conditions, this could lead to an arbitrary object being accessed.
CWE-22 - Path Traversal
Path traversal (or directory traversal), is a vulnerability that allows malicious users to traverse the server's root directory, gaining access to arbitrary files and folders such as application code & data, back-end credentials, and sensitive operating system files. In the worst-case scenario, an attacker could potentially execute arbitrary files on the server, resulting in a denial of service attack. Such an exploit may severely impact the integrity, confidentiality, and availability of an application.