![]() ![]() This could potentially allow filenames that contain special characters such as ` ` which can be used by an attacker to take over the () if the output value is used in a raw fashion (thus being directly replaced before execution) inside a `run` block. The () workflow returns the list of files changed within a workflow execution. The () action allows for command injection in changed filenames, allowing an attacker to execute arbitrary code and potentially leak secrets. As a workaround, validate user input before parsing as a URI or, if possible, use Foundation's `URL` and `URLComponents` utilities. Version 4.90.0 contains a patch for this issue. ![]() By padding the port number with zeros, an attacker can cause an integer overflow to occur when the URL authority is parsed and, as a result, spoof the host. An attacker may use this behavior to trick the application into accepting a URL to an untrusted destination. However, URI may fail to properly parse a valid (albeit abnormally long) URL, due to string ranges being converted to 16-bit integers. A developer may decide to use URI to represent a URL in their application (especially if that URL is then passed to the HTTP Client) and rely on its public properties and methods. The URI type is used in several places in Vapor. This vulnerability does not affect Vapor directly but could impact applications relying on the URI type for validating user input. Prior to version 4.90.0, Vapor's `vapor_urlparser_parse` function uses `uint16_t` indexes when parsing a URI's components, which may cause integer overflows when parsing untrusted inputs. Vapor is an HTTP web framework for Swift. ![]()
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