In JetBrains TeamCity before 2023.05.2 a ReDoS attack was possible via integration with issue trackers
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 |
|---|---|---|---|
| Teamcity | Jetbrains | * | 2023.05.2 (excluding) |
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.