CVE-2023-51651: Potential URI resolution path traversal in the AWS SDK for PHP
Impact 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 thebuildEndpoint 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.
Versions of the AWS SDK for PHP v3 before 3.288.1 are affected by this issue.
Patches Upgrade to the AWS SDK for PHP >= 3.288.1, if you are on version < 3.288.1.
References RFC 3986 - https://datatracker.ietf.org/doc/html/rfc3986
For more information If you have any questions or comments about this advisory, please contact AWS's Security team.
Other sources
AWS SDK for PHP is the Amazon Web Services software development kit for 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. This issue has been patched in version 3.288.1.
— MITRE
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2023-51651?
CVE-2023-51651 is considered a high severity vulnerability due to its potential for URI path traversal.
How do I fix CVE-2023-51651?
To remediate CVE-2023-51651, upgrade the AWS SDK for PHP to version 3.288.1 or later.
What systems are affected by CVE-2023-51651?
CVE-2023-51651 affects the AWS SDK for PHP versions prior to 3.288.1.
What type of vulnerability is CVE-2023-51651?
CVE-2023-51651 is a URI path traversal vulnerability.
What method contains the vulnerability in CVE-2023-51651?
The vulnerability CVE-2023-51651 is located in the `buildEndpoint` method of the `RestSerializer` component.