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MitreCVE-2021-43518

HistoryDec 15, 2021 - 3:15 p.m.

CVE-2021-43518

2021-12-1515:15:10

CWE-120

mitre

web.nvd.nist.gov

teeworlds

buffer overflow

vulnerability

map parser

denial of service

code execution

nvd

cve-2021-43518

CVSS2

6.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

AI Score

7.6

Confidence

High

EPSS

0.002

Percentile

55.2%

JSON

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 configurations

Nvd

Node

teeworldsteeworldsRange≤0.7.5

Node

fedoraprojectfedoraMatch35

fedoraprojectfedoraMatch36

VendorProductVersionCPE
teeworldsteeworlds*cpe:2.3:a:teeworlds:teeworlds:*:*:*:*:*:*:*:*
fedoraprojectfedora35cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
fedoraprojectfedora36cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
teeworlds	teeworlds	*	cpe:2.3:a:teeworlds:teeworlds::::::::
fedoraproject	fedora	35	cpe:2.3:o:fedoraproject:fedora:35:::::::*
fedoraproject	fedora	36	cpe:2.3:o:fedoraproject:fedora:36:::::::*