Vulnerability Details : CVE-2021-41145
Potential exploit
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.
Vulnerability category: Denial of service
Products affected by CVE-2021-41145
- cpe:2.3:a:freeswitch:freeswitch:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-41145
0.95%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 75 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-41145
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST | |
8.6
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
3.9
|
4.0
|
GitHub, Inc. |
CWE ids for CVE-2021-41145
-
The product does not properly control the allocation and maintenance of a limited resource.Assigned by: security-advisories@github.com (Secondary)
-
The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-41145
-
https://github.com/signalwire/freeswitch/security/advisories/GHSA-jvpq-23v4-gp3m
FreeSWITCH susceptible to Denial of Service via SIP flooding · Advisory · signalwire/freeswitch · GitHubExploit;Third Party Advisory
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https://github.com/signalwire/freeswitch/releases/tag/v1.10.7
Release FreeSWITCH v1.10.7 Release · signalwire/freeswitch · GitHubRelease Notes;Third Party Advisory
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