CVE-2021-32795 : What You Need to Know
Learn about CVE-2021-32795, a vulnerability in ArchiSteamFarm allowing attackers to crash instances via Steam chat. Discover the impact, affected systems, exploitation, and mitigation steps.
ArchiSteamFarm is a C# application used for idling Steam cards from multiple accounts simultaneously. The vulnerability in versions prior to 4.3.1.0 allows an attacker to crash the running ASF instance remotely through a specially crafted Steam chat message without needing authorization. Learn more about the impact, technical details, and mitigation methods below.
Understanding CVE-2021-32795
This section provides insight into the significance of the CVE-2021-32795 vulnerability in ArchiSteamFarm.
What is CVE-2021-32795?
ArchiSteamFarm versions before 4.3.1.0 contain a Denial of Service vulnerability that enables an attacker to crash the ASF instance by sending a specific Steam chat message, requiring no prior authorization.
The Impact of CVE-2021-32795
The vulnerability poses a medium risk with a CVSS base score of 6.5, allowing attackers to remotely crash ASF instances, leading to service unavailability. However, it does not permit unauthorized access or execution of arbitrary commands.
Technical Details of CVE-2021-32795
Explore the detailed technical aspects of the CVE-2021-32795 vulnerability to understand its nature and scope.
Vulnerability Description
The DoS vulnerability in ArchiSteamFarm permits attackers to crash running instances through a crafted Steam chat message, bypassing the need for authorization.
Affected Systems and Versions
ArchiSteamFarm versions >= 4.3.0.0 and < 4.3.1.0 are impacted by this vulnerability, necessitating immediate attention to prevent exploitation.
Exploitation Mechanism
Attackers exploit this flaw by sending a specifically crafted Steam chat message to the ASF instance, causing service disruption without requiring authentication.
Mitigation and Prevention
Discover the crucial steps to mitigate the risks associated with CVE-2021-32795, ensuring your systems remain secure.
Immediate Steps to Take
To protect against the vulnerability, update ArchiSteamFarm to version 4.3.1.0 or higher and consider running all bots with 'Offline' status (OnlineStatus: 0) until the upgrade is implemented.
Long-Term Security Practices
Maintain a proactive security posture by regularly updating software, monitoring for security advisories, and implementing robust security measures to prevent similar vulnerabilities.
Patching and Updates
Stay informed about security patches and updates for ArchiSteamFarm to address known vulnerabilities and protect your systems effectively.