![]() ![]() SDK users of the SqliteAccountInfo format are vulnerable while users of the InMemoryAccountInfo format are safe. Linux and Mac releases of the SDK version 1.14.0 and below contain a key disclosure vulnerability that, in certain conditions, can be exploited by local attackers through a time-of-check-time-of-use (TOCTOU) race condition. ![]() Certain proxy servers may not have this functionality though and users are encouraged to upgrade to the latest version of waitress instead.ī2-sdk-python is a python library to access cloud storage provided by backblaze. When deploying a proxy in front of waitress, turning on any and all functionality to make sure that the request matches the RFC7230 standard. This vulnerability has been patched in Waitress 2.1.1. ![]() There are two classes of vulnerability that may lead to request smuggling that are addressed by this advisory: The use of Python's `int()` to parse strings into integers, leading to `+10` to be parsed as `10`, or `0x01` to be parsed as `1`, where as the standard specifies that the string should contain only digits or hex digits and Waitress does not support chunk extensions, however it was discarding them without validating that they did not contain illegal characters. This would allow requests to be smuggled via the front-end proxy to waitress and later behavior. When using Waitress versions 2.1.0 and prior behind a proxy that does not properly validate the incoming HTTP request matches the RFC7230 standard, Waitress and the frontend proxy may disagree on where one request starts and where it ends. Waitress is a Web Server Gateway Interface server for Python 2 and 3. A non-administrative user can trigger a repair that incorrectly adds user-writable paths into PATH, enabling search-path hijacking of other users and system services. To exploit, an administrator must have installed Python for all users and enabled PATH entries. The installer may allow a local attacker to add user-writable directories to the system search path. In Python before 3.10.3 on Windows, local users can gain privileges because the search path is inadequately secured. ![]()
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