An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the cleo PyPI package, when an attacker is able to supply arbitrary input to the Table.set_rows method
Weakness
The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Cleo | Python-poetry | * | 2.0.0 (excluding) |
| Python-cleo | Ubuntu | kinetic | * |
| Python-cleo | Ubuntu | lunar | * |
| Python-cleo | Ubuntu | mantic | * |
| Python-cleo | Ubuntu | oracular | * |
| Python-cleo | Ubuntu | plucky | * |
| Python-cleo | Ubuntu | trusty | * |
| Python-cleo | Ubuntu | xenial | * |