CVE-2021-41145
25.10.2021, 22:15
FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. FreeSWITCH prior to version 1.10.7 is susceptible to Denial of Service via SIP flooding. When flooding FreeSWITCH with SIP messages, it was observed that after a number of seconds the process was killed by the operating system due to memory exhaustion. By abusing this vulnerability, an attacker is able to crash any FreeSWITCH instance by flooding it with SIP messages, leading to Denial of Service. The attack does not require authentication and can be carried out over UDP, TCP or TLS. This issue was patched in version 1.10.7.Enginsight
| Vendor | Product | Version |
|---|---|---|
| freeswitch | freeswitch | 𝑥 < 1.10.7 |
𝑥
= Vulnerable software versions
Common Weakness Enumeration
- CWE-400 - Uncontrolled Resource ConsumptionThe software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.
- CWE-401 - Missing Release of Memory after Effective LifetimeThe software does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory.