Resource exhaustion in Teeworlds - CVE-2020-12066
Published: April 22, 2020 / Updated: July 17, 2020
Vulnerability identifier: #VU30301
CSH Severity: Medium
CVSS v4: 8.7 [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]
CVE-ID: CVE-2020-12066
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Teeworlds
Debian Linux
SUSE Linux
Opensuse
Ubuntu
Fedora
teeworlds-server (Ubuntu package)
teeworlds (Debian package)
teeworlds
Debian Linux
SUSE Linux
Opensuse
Ubuntu
Fedora
teeworlds-server (Ubuntu package)
teeworlds (Debian package)
teeworlds
How to mitigate CVE-2020-12066
Install update from vendor's website.
Teeworlds - update to 0.7.5
teeworlds-server (Ubuntu package) - update to 0.7.2-5ubuntu1.1
teeworlds (Debian package) - update to 0.7.2-5+deb10u1
teeworlds - update to 0.7.5-1.fc30
teeworlds-server (Ubuntu package) - update to 0.7.2-5ubuntu1.1
teeworlds (Debian package) - update to 0.7.2-5+deb10u1
teeworlds - update to 0.7.5-1.fc30
External References
- http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00044.html
- http://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