CVE-2021-43518

Name	CVE-2021-43518
Description	Teeworlds up to and including 0.7.5 is vulnerable to Buffer Overflow. A map parser does not validate m_Channels value coming from a map file, leading to a buffer overflow. A malicious server may offer a specially crafted map that will overwrite client's stack causing denial of service or code execution.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
Debian Bugs	1009070

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
teeworlds (PTS)	buster, buster (security)	0.7.2-5+deb10u1	vulnerable
	bookworm, bullseye	0.7.5-1	vulnerable
	sid	0.7.5-2	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
teeworlds	source	(unstable)	0.7.5-2			1009070

Notes

[bullseye] - teeworlds <no-dsa> (Minor issue)
[buster] - teeworlds <no-dsa> (Minor issue)
https://github.com/teeworlds/teeworlds/issues/2981
https://github.com/teeworlds/teeworlds/pull/3018
https://github.com/teeworlds/teeworlds/commit/91e5492d4c210f82f1ca6b43a73417fef5463368
https://mmmds.pl/fuzzing-map-parser-part-1-teeworlds/