SimpleHelp Missing Authorization Vulnerability Leads to Privilege Escalation

CVE-2024-57726 affects SimpleHelp, a remote support software solution. This vulnerability stems from a missing authorization check, allowing low-privileged technicians to create API keys with elevated permissions beyond their intended scope. Specifically, these API keys can be manipulated to grant server admin privileges, potentially enabling unauthorized access to sensitive data and critical system configurations. The vulnerability impacts SimpleHelp versions 5.5.7 and earlier. Successful exploitation allows attackers to bypass intended access controls, gain complete control over the SimpleHelp server, and potentially pivot to other systems within the network. This vulnerability was disclosed in January 2025, and organizations using affected SimpleHelp versions are at risk.

Attack Chain

1. A low-privileged technician logs into the SimpleHelp console with their existing credentials.
2. The technician leverages the missing authorization vulnerability to create a new API key.
3. During API key creation, the attacker manipulates the request to assign excessive permissions beyond their authorized access level.
4. The attacker uses the newly created API key to authenticate against the SimpleHelp API.
5. The attacker leverages the elevated permissions granted by the manipulated API key to access administrative functions.
6. The attacker escalates their privileges to the server admin role, granting them complete control over the SimpleHelp server.
7. The attacker uses the server admin role to access sensitive data, modify system configurations, or create new administrative accounts.
8. The attacker potentially pivots to other systems within the network using the compromised SimpleHelp server as a stepping stone.

Impact

Successful exploitation of CVE-2024-57726 allows low-privileged technicians, or malicious actors who have compromised technician accounts, to escalate their privileges to the server admin role in SimpleHelp. This grants them complete control over the SimpleHelp server, potentially leading to data breaches, system downtime, and further compromise of the network. The vulnerability affects organizations using SimpleHelp versions 5.5.7 and earlier. The number of victims and specific sectors targeted remain unknown, but the potential impact is significant due to the sensitive nature of remote support software.

Recommendation

• Apply mitigations provided by SimpleHelp to patch the missing authorization vulnerability in SimpleHelp versions 5.5.7 and earlier (reference: https://simple-help.com/kb---security-vulnerabilities-01-2025#security-vulnerabilities-in-simplehelp-5-5-7-and-earlier).
• Deploy the Sigma rule Detect Suspicious SimpleHelp API Key Creation to identify attempts to create API keys with excessive permissions.
• Follow applicable BOD 22-01 guidance for cloud services or discontinue use of SimpleHelp if mitigations are unavailable.