#VU49937 Security features bypass in coTURN - CVE-2020-26262 

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Main Vulnerability Database Vulnerabilities #VU49937

#VU49937 Security features bypass in coTURN - CVE-2020-26262

Published: January 13, 2021 / Updated: January 24, 2021


Vulnerability identifier: #VU49937
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-26262
CWE-ID: CWE-254
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
coTURN
Software vendor:
coTURN

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists in the way the Coturn handles CONNECT requests with XOR-PEER-ADDRESS set to "0.0.0.0". A remote attacker can send specially crafted request to the affected server and force Coturn relay on the loopback addresses, such as 127.x.x.x and ::1, which is disabled by default.


Remediation

Install updates from vendor's website.

External links