stb stb_truetype.h through 1.22 has an assertion failure in stbtt__cff_get_index.
The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Stb_truetype.h | Nothings | * | 1.22 (including) |
| Libstb | Ubuntu | disco | * |
| Libstb | Ubuntu | eoan | * |
| Libstb | Ubuntu | groovy | * |
| Libstb | Ubuntu | hirsute | * |
| Libstb | Ubuntu | impish | * |
| Libstb | Ubuntu | kinetic | * |
| Libstb | Ubuntu | lunar | * |
| Libstb | Ubuntu | mantic | * |
| Libstb | Ubuntu | trusty | * |
While assertion is good for catching logic errors and reducing the chances of reaching more serious vulnerability conditions, it can still lead to a denial of service. For example, if a server handles multiple simultaneous connections, and an assert() occurs in one single connection that causes all other connections to be dropped, this is a reachable assertion that leads to a denial of service.