#VU30301 Resource exhaustion in Teeworlds - CVE-2020-12066

Vulnerability identifier: #VU30301

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-12066

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Teeworlds
Client/Desktop applications / Games

Vendor: Teeworlds

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

CServer::SendMsg in engine/server/server.cpp in Teeworlds 0.7.x before 0.7.5 allows remote attackers to shut down the server.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Teeworlds: 0.7.0 - 0.7.4

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External links
https://lists.opensuse.org/opensuse-security-announce/2020-04/msg00044.html
https://lists.opensuse.org/opensuse-security-announce/2020-04/msg00045.html
https://github.com/teeworlds/teeworlds/commit/c68402fa7e279d42886d5951d1ea8ac2facc1ea5
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AVYG7CCPS5F3OPOQMJKVNXTQ7BXSEX2V/
https://www.teeworlds.com/forum/viewtopic.php?id=14785

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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.