nth-check is vulnerable to Inefficient Regular Expression Complexity
Weakness
The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Nth-check | Nth-check_project | * | 2.0.1 (excluding) |
| Node-nth-check | Ubuntu | bionic | * |
| Node-nth-check | Ubuntu | esm-apps/bionic | * |
| Node-nth-check | Ubuntu | esm-apps/focal | * |
| Node-nth-check | Ubuntu | focal | * |
| Node-nth-check | Ubuntu | impish | * |
| Node-nth-check | Ubuntu | trusty | * |
| Node-nth-check | Ubuntu | upstream | * |
| Node-nth-check | Ubuntu | xenial | * |
Extended Description
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.
Potential Mitigations
Related Attack Patterns
References
- https://github.com/fb55/nth-check/commit/9894c1d2010870c351f66c6f6efcf656e26bb726
- https://huntr.dev/bounties/8cf8cc06-d2cf-4b4e-b42c-99fafb0b04d0
- https://lists.debian.org/debian-lts-announce/2023/05/msg00023.html
- https://github.com/fb55/nth-check/commit/9894c1d2010870c351f66c6f6efcf656e26bb726
- https://huntr.dev/bounties/8cf8cc06-d2cf-4b4e-b42c-99fafb0b04d0
- https://lists.debian.org/debian-lts-announce/2023/05/msg00023.html