The mirroring support (-M, –use-mirrors) in Python Pip before 1.5 uses insecure DNS querying and authenticity checks which allows attackers to perform man-in-the-middle attacks.
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Pip | Pypa | * | 1.5 (excluding) |
| Virtualenv | Virtualenv | 12.0.7 (including) | 12.0.7 (including) |