Marked is a markdown parser and compiler. Prior to version 4.0.10, the regular expression block.def may cause catastrophic backtracking against some strings and lead to a regular expression denial of service (ReDoS). Anyone who runs untrusted markdown through a vulnerable version of marked and does not use a worker with a time limit may be affected. This issue is patched in version 4.0.10. As a workaround, avoid running untrusted markdown through marked or run marked on a worker thread and set a reasonable time limit to prevent draining resources.
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 |
|---|---|---|---|
| Marked | Marked_project | * | 4.0.10 (excluding) |
| Red Hat Ceph Storage 6.1 | RedHat | rhceph/rhceph-6-dashboard-rhel9:6-75 | * |
| Node-marked | Ubuntu | bionic | * |
| Node-marked | Ubuntu | hirsute | * |
| Node-marked | Ubuntu | impish | * |
| Node-marked | Ubuntu | kinetic | * |
| Node-marked | Ubuntu | lunar | * |
| Node-marked | Ubuntu | mantic | * |
| Node-marked | Ubuntu | trusty | * |
| Node-marked | 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.