Buffer overflow in Steam - CVE-2021-30481
Published: April 14, 2021 / Updated: May 18, 2021
Vulnerability identifier: #VU52200
CSH Severity: High
CVSS v4.0: 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-2021-30481
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: Valve Software
Affected software:
Steam
Steam
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing Steam invites. A remote attacker can send a specially crafted invite, trigger a buffer overflow after the user clicks on the invite, and execute arbitrary code on the system.
How to mitigate CVE-2021-30481
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.