Vulnerability · Published Dec 15, 2021 · Assigned by mitre
CVE-2021-43518
High 7.8
In plain English
A high-severity security flaw in the teeworlds package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 73% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.8High
Exploit odds (30 days)1.4%top 26.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | teeworlds | 0.7.5-2 | DEBIAN-CVE-2021-43518 |
| Debian:13 | teeworlds | 0.7.5-2 | DEBIAN-CVE-2021-43518 |
| Debian:14 | teeworlds | 0.7.5-2 | DEBIAN-CVE-2021-43518 |
| Ubuntu:22.04:LTS | teeworlds | no fix listed | UBUNTU-CVE-2021-43518 |
| Ubuntu:24.04:LTS | teeworlds | 0.7.5-2 | UBUNTU-CVE-2021-43518 |
| Ubuntu:25.10 | teeworlds | 0.7.5-2 | UBUNTU-CVE-2021-43518 |
| Ubuntu:26.04:LTS | teeworlds | 0.7.5-2 | UBUNTU-CVE-2021-43518 |
Affected products (as reported)
References
- https://github.com/teeworlds/teeworlds/issues/2981 x_refsource_MISC
- https://mmmds.pl/fuzzing-map-parser-part-1-teeworlds/ x_refsource_MISC
- FEDORA-2022-f446c92b48 vendor-advisory, x_refsource_FEDORA
- FEDORA-2022-f281321e55 vendor-advisory, x_refsource_FEDORA