High severity · published Dec 15, 2021
CVE-2021-43518
Teeworlds up to and including 0.7.5 is vulnerable to Buffer Overflow
7.8
CVSS
1.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 73% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
35; 36 · source: NVD
TE
Teeworlds · Teeworlds
through 0.7.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-43518
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-43518
Exploit
https://github.com/teeworlds/teeworlds/issues/2981
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JIYZ7EVY6NZBM7FQF6GVUARYO6MKSEAT/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OS2LI2RHQNUKUT3FKWYHRC27PLRWCHMZ/
Exploit
https://mmmds.pl/fuzzing-map-parser-part-1-teeworlds/
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