CVE-2024-39714 Overview
CVE-2024-39714 is a critical code injection vulnerability affecting Veeam Service Provider Console (VSPC) that allows a low-privileged user to upload arbitrary files to the server, ultimately leading to remote code execution. This vulnerability is classified under CWE-94 (Improper Control of Generation of Code), making it a serious threat to organizations relying on VSPC for backup management.
Critical Impact
Low-privileged attackers can achieve full remote code execution on VSPC servers through arbitrary file upload, potentially compromising backup infrastructure and sensitive data across managed environments.
Affected Products
- Veeam Service Provider Console (VSPC)
- VSPC Server Components
Discovery Timeline
- 2024-09-07 - CVE-2024-39714 published to NVD
- 2024-09-09 - Last updated in NVD database
Technical Details for CVE-2024-39714
Vulnerability Analysis
This code injection vulnerability stems from insufficient validation of file uploads within the Veeam Service Provider Console. The flaw allows authenticated users with low-privilege accounts to bypass file upload restrictions and place arbitrary files on the server. Once malicious files are uploaded, an attacker can leverage them to execute arbitrary code within the context of the VSPC server process.
The attack is particularly dangerous because it can be launched remotely over the network and requires only low-level authentication. The scope change indicator in the vulnerability assessment means that a successful exploit can impact resources beyond the vulnerable component itself, potentially affecting other managed systems and backup data.
Root Cause
The root cause lies in improper input validation and insufficient access controls within the file upload mechanism of VSPC. The application fails to adequately sanitize or restrict the types of files that low-privileged users can upload, and does not properly validate file content before processing. This oversight allows attackers to upload executable content or scripts that the server subsequently processes or executes.
Attack Vector
The attack vector for CVE-2024-39714 is network-based, requiring only low-privilege authentication to the VSPC interface. An attacker would:
- Authenticate to the VSPC with a low-privileged account
- Identify the vulnerable file upload functionality
- Craft a malicious payload disguised as or embedded within an uploadable file
- Upload the malicious file to the server
- Trigger execution of the uploaded payload, achieving remote code execution
The vulnerability does not require user interaction and has low attack complexity, making it particularly attractive to threat actors targeting backup infrastructure.
Detection Methods for CVE-2024-39714
Indicators of Compromise
- Unexpected file uploads in VSPC server directories, particularly executable files or scripts with unusual naming conventions
- Anomalous process execution spawning from VSPC server processes
- Unusual network connections originating from the VSPC server to external or internal systems
- Authentication logs showing low-privileged accounts accessing file upload functionalities
Detection Strategies
- Monitor VSPC server directories for new or modified files, especially in upload locations and web-accessible directories
- Implement file integrity monitoring (FIM) on critical VSPC server paths
- Review authentication logs for suspicious access patterns from low-privileged accounts
- Deploy endpoint detection and response (EDR) solutions to identify anomalous process behavior on VSPC servers
Monitoring Recommendations
- Enable verbose logging for VSPC file upload operations and authentication events
- Configure alerts for file creation events involving executable extensions or script files in upload directories
- Monitor for unusual outbound network connections from VSPC servers that may indicate post-exploitation activity
- Regularly audit user privileges within VSPC to identify unnecessary low-privileged accounts
How to Mitigate CVE-2024-39714
Immediate Actions Required
- Apply the security patch provided by Veeam as documented in Veeam Knowledge Base Article KB4649
- Review and audit all user accounts with access to VSPC, removing unnecessary privileges and disabling unused accounts
- Implement network segmentation to limit access to VSPC management interfaces
- Enable enhanced logging and monitoring on VSPC servers to detect potential exploitation attempts
Patch Information
Veeam has released security updates to address this vulnerability. Organizations should consult the Veeam Knowledge Base Article KB4649 for detailed patching instructions and affected version information. Given the critical severity and the high EPSS percentile indicating elevated exploitation probability, patching should be prioritized.
Workarounds
- Restrict network access to VSPC management interfaces using firewall rules or network access control lists
- Implement additional authentication mechanisms such as multi-factor authentication (MFA) for VSPC access
- Review and minimize the number of user accounts with access to VSPC, applying the principle of least privilege
- Consider temporarily disabling file upload functionality if operationally feasible until patches can be applied
# Example firewall rule to restrict VSPC access to trusted management networks
# Adjust IP ranges and ports according to your environment
iptables -A INPUT -p tcp --dport 1280 -s 10.0.0.0/8 -j ACCEPT
iptables -A INPUT -p tcp --dport 1280 -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
