CVE-2021-43518 Information

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

Reference

https://mmmds.pl/fuzzing-map-parser-part-1-teeworlds/ https://github.com/teeworlds/teeworlds/issues/2981

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8