Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Teeworlds | Teeworlds | <= 0.7.5 |
| Fedoraproject | Fedora | 35 |
Related Weaknesses (CWE)
References
- https://github.com/teeworlds/teeworlds/issues/2981ExploitIssue TrackingThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://mmmds.pl/fuzzing-map-parser-part-1-teeworlds/ExploitThird Party Advisory
- https://github.com/teeworlds/teeworlds/issues/2981ExploitIssue TrackingThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://mmmds.pl/fuzzing-map-parser-part-1-teeworlds/ExploitThird Party Advisory
FAQ
What is CVE-2021-43518?
CVE-2021-43518 is a vulnerability with a CVSS score of 7.8 (HIGH). 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...
How severe is CVE-2021-43518?
CVE-2021-43518 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-43518?
Check the references section above for vendor advisories and patch information. Affected products include: Teeworlds Teeworlds, Fedoraproject Fedora.