UBUNTU-CVE-2021-43518

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Source
https://ubuntu.com/security/CVE-2021-43518
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-43518.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-43518
Upstream
Published
2021-12-15T15:15:00Z
Modified
2026-05-20T16:05:19Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:20.04:LTS / teeworlds

Package

Name
teeworlds
Purl
pkg:deb/ubuntu/teeworlds?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.7.2-5
0.7.2-5ubuntu1
0.7.2-5ubuntu1.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "teeworlds",
            "binary_version": "0.7.2-5ubuntu1.1"
        },
        {
            "binary_name": "teeworlds-data",
            "binary_version": "0.7.2-5ubuntu1.1"
        },
        {
            "binary_name": "teeworlds-server",
            "binary_version": "0.7.2-5ubuntu1.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-43518.json"

Ubuntu:22.04:LTS / teeworlds

Package

Name
teeworlds
Purl
pkg:deb/ubuntu/teeworlds?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.7.5-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "teeworlds",
            "binary_version": "0.7.5-1"
        },
        {
            "binary_name": "teeworlds-data",
            "binary_version": "0.7.5-1"
        },
        {
            "binary_name": "teeworlds-server",
            "binary_version": "0.7.5-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-43518.json"

Ubuntu:24.04:LTS / teeworlds

Package

Name
teeworlds
Purl
pkg:deb/ubuntu/teeworlds?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.7.5-2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "teeworlds",
            "binary_version": "0.7.5-2"
        },
        {
            "binary_name": "teeworlds-data",
            "binary_version": "0.7.5-2"
        },
        {
            "binary_name": "teeworlds-server",
            "binary_version": "0.7.5-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-43518.json"

Ubuntu:25.10 / teeworlds

Package

Name
teeworlds
Purl
pkg:deb/ubuntu/teeworlds?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.7.5-2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "teeworlds",
            "binary_version": "0.7.5-2"
        },
        {
            "binary_name": "teeworlds-data",
            "binary_version": "0.7.5-2"
        },
        {
            "binary_name": "teeworlds-server",
            "binary_version": "0.7.5-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-43518.json"

Ubuntu:26.04:LTS / teeworlds

Package

Name
teeworlds
Purl
pkg:deb/ubuntu/teeworlds?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.7.5-2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "teeworlds",
            "binary_version": "0.7.5-2"
        },
        {
            "binary_name": "teeworlds-data",
            "binary_version": "0.7.5-2"
        },
        {
            "binary_name": "teeworlds-server",
            "binary_version": "0.7.5-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-43518.json"