The py library through 1.11.0 for Python allows remote attackers to conduct a ReDoS (Regular expression Denial of Service) attack via a Subversion repository with crafted info data, because the InfoSvnCommand argument is mishandled. Note: This has been disputed by multiple third parties as not being reproduceable and they argue this is not a valid vulnerability.
The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Py | Pytest | * | 1.11.0 (including) |
| Py | Ubuntu | trusty | * |
| Py | Ubuntu | xenial | * |
| Python-py | Ubuntu | bionic | * |
| Python-py | Ubuntu | kinetic | * |
| Python-py | Ubuntu | lunar | * |
| Python-py | Ubuntu | mantic | * |
| Python-py | Ubuntu | trusty | * |
| Python-py | Ubuntu | xenial | * |
Attackers can create crafted inputs that
intentionally cause the regular expression to use
excessive backtracking in a way that causes the CPU
consumption to spike.