Vulnerability Details : CVE-2021-43518
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.
Vulnerability category: OverflowDenial of service
Products affected by CVE-2021-43518
- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
- cpe:2.3:a:teeworlds:teeworlds:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-43518
0.22%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 60 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-43518
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
|
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2021-43518
-
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-43518
-
https://github.com/teeworlds/teeworlds/issues/2981
Stack buffer overflow (write) while loading map in CMapLayers::LoadEnvPoints, maplayers.cpp:184 · Issue #2981 · teeworlds/teeworlds · GitHubExploit;Issue Tracking;Third Party Advisory
-
https://mmmds.pl/fuzzing-map-parser-part-1-teeworlds/
Fuzzing game map parsers, part 1 - Teeworlds – mmmds's blogExploit;Third Party Advisory
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https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OS2LI2RHQNUKUT3FKWYHRC27PLRWCHMZ/
[SECURITY] Fedora 35 Update: teeworlds-0.7.5-10.fc35 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
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https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JIYZ7EVY6NZBM7FQF6GVUARYO6MKSEAT/
[SECURITY] Fedora 36 Update: teeworlds-0.7.5-10.fc36 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
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