A Denial of Service (DoS) vulnerability exists in berriai/litellm version v1.44.5. This vulnerability can be exploited by appending characters, such as dashes (-), to the end of a multipart boundary in an HTTP request. The server continuously processes each character, leading to excessive resource consumption and rendering the service unavailable. The issue is unauthenticated and does not require any user interaction, impacting all users of the service.
The product does not properly control the allocation and maintenance of a limited resource.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Litellm | Litellm | * | 1.65.4 (excluding) |
| Litellm | Litellm | 1.65.4-dev2 (including) | 1.65.4-dev2 (including) |
| Litellm | Litellm | 1.65.4-dev6 (including) | 1.65.4-dev6 (including) |
| Litellm | Litellm | 1.65.4-dev8 (including) | 1.65.4-dev8 (including) |
| Litellm | Litellm | 1.65.4-nightly (including) | 1.65.4-nightly (including) |
Mitigation of resource exhaustion attacks requires that the target system either:
The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.
The second solution is simply difficult to effectively institute – and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.