Input validation error in Game Networking Sockets - CVE-2020-6019
Published: November 18, 2020 / Updated: December 11, 2020
Vulnerability identifier: #VU48929
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2020-6019
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: Valve Software
Affected software:
Game Networking Sockets
Game Networking Sockets
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of inlined statistic messages within the CConnectionTransportUDPBase::Received_Data() function. A remote attacker can pass specially crafted input to the gaming server and perform a denial of service (DoS) attack.
How to mitigate CVE-2020-6019
Install updates from vendor's website.