Resource Exhaustion Affecting freeswitch package, versions <1.10.7-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.1% (44th percentile)

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  • Snyk IDSNYK-ALPINE320-FREESWITCH-7009015
  • published23 May 2024
  • disclosed25 Oct 2021

Introduced: 25 Oct 2021

CVE-2021-41145  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Alpine:3.20 freeswitch to version 1.10.7-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream freeswitch package and not the freeswitch package as distributed by Alpine. See How to fix? for Alpine:3.20 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1