TCPDF version <=6.6.5 is vulnerable to ReDoS (Regular Expression Denial of Service) if parsing an untrusted HTML page with a crafted color.
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 |
|---|---|---|---|
| Tcpdf | Tcpdf_project | * | 6.7.4 (including) |
| Tcpdf | Ubuntu | focal | * |
| Tcpdf | Ubuntu | mantic | * |
| Tcpdf | Ubuntu | oracular | * |
| Tcpdf | Ubuntu | trusty/esm | * |
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.