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CVE-2024-37084 is a critical security vulnerability affecting Spring Cloud Data Flow versions prior to 2.11.4. This vulnerability enables malicious actors to exploit the Skipper server API, allowing them to write arbitrary files to any location on the file system, potentially leading to server compromise. With a CVSS v3.1 Base Score of 9.8, this issue is marked as critical and demands immediate action. This report outlines the technical details of the vulnerability, its exploitation in the wild, and provides comprehensive mitigation strategies to safeguard your systems.
Targeted Sectors and Countries
Although no specific sectors or countries have been identified as targets yet, the widespread use of Spring Cloud Data Flow suggests that a broad range of organizations could be vulnerable. Sectors such as technology, finance, healthcare, and government should be particularly vigilant due to their high-value data and critical operations.
CVE-2024-37084 Technical Information
Vulnerability ID: CVE-2024-37084
Description: This vulnerability impacts Spring Cloud Data Flow versions 2.11.0 to 2.11.3. It allows a malicious user with access to the Skipper server API to upload files that can be written to any location on the file system, leading to unauthorized code execution and possible data breaches.
CVSS v3.1 Base Score: 9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-94 - Improper Control of Code Generation ('Code Injection')
Technical Details:
Affected Versions: Spring Cloud Data Flow 2.11.0 - 2.11.3
Mitigation: Upgrade to version 2.11.4 or later.
This vulnerability arises from improper handling of file uploads via the Skipper server API. Attackers can exploit this by sending a crafted YAML input, bypassing security controls to write files to arbitrary locations on the server’s file system, potentially allowing arbitrary code execution, data manipulation, or denial of service.
References:
Exploitation in the Wild
A Proof-of-Concept (PoC) exploit for CVE-2024-37084 has surfaced online, demonstrating how crafted YAML input can be used to exploit the vulnerability. The public availability of this exploit raises the risk of widespread attacks, stressing the need for swift action.
Indicators of Compromise (IOCs):
Suspicious File Writes: Look for unexpected file writes in directories that should not be modified by the Skipper server.
Network Traffic: Monitor for unusual API requests to the Skipper server, especially those containing large payloads or unexpected parameters.
Log Entries: Check logs for signs of attempted or successful file uploads via the Skipper server API.
APT Groups Using This Vulnerability
No specific Advanced Persistent Threat (APT) groups have been linked to the exploitation of CVE-2024-37084. However, given its severity, it's likely that APT groups may adopt this exploit soon. Vigilant monitoring and threat intelligence updates are strongly recommended.
Affected Product Versions
The following versions of Spring Cloud Data Flow are vulnerable to CVE-2024-37084:
Versions 2.11.0 to 2.11.3
Workaround and Mitigation
To mitigate the risks associated with CVE-2024-37084, consider the following actions:
Upgrade: Upgrade all instances of Spring Cloud Data Flow to version 2.11.4 or later.
Access Control: Limit access to the Skipper server API to trusted users.
Network Segmentation: Segment the network to reduce the potential impact of a compromised server.
Monitoring: Enable detailed logging and monitoring to detect unusual activity related to the Skipper server API.
WAF Rules: Implement Web Application Firewall (WAF) rules to detect and block malicious upload requests.
References
About Rescana
Rescana specializes in Continuous Threat and Exposure Management (CTEM), helping organizations identify, assess, and mitigate risks.
For inquiries related to this report or other cybersecurity concerns, please contact us at ops@rescana.com.
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