Multiple vulnerabilities in CoTURN

Published: 2020-02-20 | Updated: 2020-04-30

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-6061 CVE-2020-6062
CWE-ID	CWE-122 CWE-476
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	coTURN Server applications / Other server solutions
Vendor	coTURN

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

Updated: 30.04.2020

Changed bulletin status to patched.

1) Heap-based buffer overflow

EUVDB-ID: #VU25492

Risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2020-6061

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause information leaks and other misbehavior.

The vulnerability exists due to a boundary error when web server parses POST requests. A remote attacker can send a specially crafted HTTPS request, trigger heap-based buffer overflow and cause information leaks and other misbehavior.

Mitigation

Install update from vendor's website.

Vulnerable software versions

coTURN: 4.5.1.1

External links

http://talosintelligence.com/vulnerability_reports/TALOS-2020-0984
http://github.com/coturn/coturn/blob/master/ChangeLog

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) NULL pointer dereference

EUVDB-ID: #VU25493

Risk: Medium

CVSSv3.1: 5.4 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2020-6062

CWE-ID: CWE-476 - NULL Pointer Dereference