Resource exhaustion in Teeworlds Teeworlds

1) Resource exhaustion

EUVDB-ID: #VU30301

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 - Resource exhaustion

Exploit availability: No

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

CPE2.3

• cpe:2.3:a:teeworlds:teeworlds:0.7.0:*:*:*:*:*:*:*
• cpe:2.3:a:teeworlds:teeworlds:0.7.1:*:*:*:*:*:*:*
• cpe:2.3:a:teeworlds:teeworlds:0.7.2:*:*:*:*:*:*:*

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

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to open a a specially crafted file.

Is there known malware, which exploits this vulnerability?

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