An issue was discovered in cairo 1.16.0. There is an assertion problem in the function _cairo_arc_in_direction in the file cairo-arc.c.
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 |
|---|---|---|---|
| Cairo | Cairographics | 1.16.0 (including) | 1.16.0 (including) |
| Cairo | Ubuntu | bionic | * |
| Cairo | Ubuntu | cosmic | * |
| Cairo | Ubuntu | disco | * |
| Cairo | Ubuntu | eoan | * |
| Cairo | Ubuntu | groovy | * |
| Cairo | Ubuntu | hirsute | * |
| Cairo | Ubuntu | impish | * |
| Cairo | Ubuntu | kinetic | * |
| Cairo | Ubuntu | lunar | * |
| Cairo | Ubuntu | mantic | * |
| Cairo | Ubuntu | trusty | * |
| Cairo | Ubuntu | xenial | * |
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.