#VU24703 Input validation error in Dota 2 - CVE-2020-7949
Published: January 28, 2020 / Updated: June 17, 2021
Vulnerability identifier: #VU24703
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber
CVE-ID: CVE-2020-7949
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerable software:
Dota 2
Dota 2
Software vendor:
Valve Software
Valve Software
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack or execute arbitrary code.
The vulnerability exists due to insufficient validation of user-supplied input in the "schemasystem.dll". A remote attacker can create a gaming server, invite a victim to this server, because a crafted map is mishandled during a GetValue call and execute arbitrary code or cause a denial of service condition on the target system.
Remediation
Install updates from vendor's website.