Full Report
Cybersecurity researchers have disclosed multiple security flaws in SimpleHelp remote access software that could lead to information disclosure, privilege escalation, and remote code execution. Horizon3.ai researcher Naveen Sunkavally, in a technical report detailing the findings, said the "vulnerabilities are trivial to reverse and exploit." The list of identified flaws is as follows -
Analysis Summary
# Vulnerability: Critical Flaws in SimpleHelp Allow File Theft, Privilege Escalation, and RCE
## CVE Details
- CVE ID: CVE-2024-57727, CVE-2024-57728, CVE-2024-57726
- CVSS Score: Not explicitly stated, but described as "Critical."
- *Note: Specific severity scores (e.g., CVSS v3 base) are not provided in the text.*
- CWE: Path Traversal (CVE-2024-57727), Arbitrary File Upload (CVE-2024-57728), Missing Authorization (CVE-2024-57726)
## Affected Systems
- Products: SimpleHelp remote access software / SimpleHelp server
- Versions: Pre-5.3.9, Pre-5.4.10, Pre-5.5.8 (All versions prior to the January 2025 patches)
- Configurations: N/A
## Vulnerability Description
The SimpleHelp software suffers from three critical vulnerabilities identified by Horizon3.ai researchers:
1. **CVE-2024-57727 (Path Traversal):** An unauthenticated vulnerability allows an attacker to traverse directories and download arbitrary files from the SimpleHelp server. This includes sensitive configuration files like `serverconfig.xml`, which contains hashed passwords for administrative and technician accounts.
2. **CVE-2024-57728 (Arbitrary File Upload):** An attacker who has obtained SimpleHelpAdmin privileges (or admin-level technician privileges) can upload arbitrary files to any location on the SimpleHelp server host, leading to the potential for Remote Code Execution (RCE).
3. **CVE-2024-57726 (Privilege Escalation):** A vulnerability exists due to missing backend authorization checks, allowing an attacker logged in as a low-privilege technician to elevate their access to an administrator level.
These flaws can be chained (e.g., 57726 followed by 57728) to enable an attacker to gain full administrative control and execute code remotely on the server.
## Exploitation
- Status: While intelligence regarding *in-the-wild* exploitation is not provided, the research implies high risk, stating the vulnerabilities are "trivial to reverse and exploit."
- Complexity: Low (implied by "trivial to reverse and exploit")
- Attack Vector: Network (for initial access/information disclosure); Local/Privileged access for deeper exploitation (File Upload/RCE).
## Impact
- Confidentiality: High (Exposure of hashed passwords and arbitrary file access via Path Traversal)
- Integrity: High (Ability to upload files and execute code via File Upload/RCE)
- Availability: High (Potential for complete system compromise leading to downtime)
## Remediation
### Patches
SimpleHelp released fixes on January 8 and January 13, 2025. Affected users must upgrade to:
* SimpleHelp version **5.3.9** (or later)
* SimpleHelp version **5.4.10** (or later)
* SimpleHelp version **5.5.8** (or later)
### Workarounds
SimpleHelp recommends the following actions in addition to patching:
1. Change the administrator password for the SimpleHelp server.
2. Rotate passwords for all Technician accounts.
3. Restrict the IP addresses from which Technician and administrator logins are permitted to connect to the SimpleHelp server.
## Detection
- Indicators of Compromise: Examination of file system modifications on the server host, unauthorized access attempts, unexpected changes to `serverconfig.xml`, and outbound network connections originating from the SimpleHelp service account that are not standard control traffic.
- Detection methods and tools: Monitoring logs for unauthorized file read/write operations originating from the SimpleHelp service, and scanning for known malicious file/payload uploads if RCE has been attempted.
## References
- Vendor Advisories: SimpleHelp security bulletin detailing vulnerabilities released January 2025 (linked source: `simple-help.com/kb---security-vulnerabilities-01-2025#vulnerability-details`)
- Research Report: `https://www.horizon3.ai/attack-research/disclosures/critical-vulnerabilities-in-simplehelp-remote-support-software/`