SB2021041403 - Remote code execution in Valve Steam
Published: April 14, 2021
Security Bulletin ID
SB2021041403
CSH Severity
High
Patch available
NO
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Buffer overflow (CVE-ID: CVE-2021-30481)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 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
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.
Remediation
Cybersecurity Help is not aware of any official remediation provided by the vendor.