Pexip Infinity 32.0 through 37.1 before 37.2, in certain configurations of OTJ (One Touch Join) for Teams SIP Guest Join, has Improper Input Validation in the OTJ service, allowing a remote attacker to trigger a software abort via a crafted calendar invite, leading to a denial of service.
Weakness
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.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Pexip_infinity | Pexip | 32.0 (including) | 37.2 (excluding) |
Extended Description
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.