CVE-2023-29552 is a high-severity vulnerability affecting the Service Location Protocol (SLP), as defined in RFC 2608. This vulnerability allows an unauthenticated, remote attacker to register arbitrary services using SLP. The attacker could exploit this flaw to utilize spoofed UDP traffic, resulting in a denial-of-service (DoS) attack with a significant amplification factor. Given its potential impact, organizations should prioritize patching immediately.
The CVSS score for this vulnerability is 7.5, categorized as high severity. The attack vector is network-based with low complexity, meaning that no special conditions or privileges are required for exploitation. The vulnerability has a significant impact on availability, which can disrupt services and lead to potential outages.
This vulnerability is known to affect several products, including those from NetApp, SUSE, VMware, and the Service Location Protocol Project. Organizations utilizing these technologies should assess their exposure and take immediate action.
Given the high potential impact and the availability of exploit information, it is crucial for organizations to remain vigilant. The urgency for remediation is critical, particularly for systems exposed to untrusted networks.
Vulnerability Details
The Service Location Protocol (SLP, RFC 2608) allows an unauthenticated, remote attacker to register arbitrary services. This vulnerability allows attackers to leverage spoofed UDP traffic to conduct a denial-of-service attack with a significant amplification factor.
CVSS score: 7.5 (High). The attack vector is NETWORK, and the attack complexity is LOW. There are no privileges required, and no user interaction is necessary. The confidentiality impact is NONE, integrity impact is NONE, and availability impact is HIGH.
Affected products include NetApp SMI-S Provider, SUSE Manager Server, SUSE Linux Enterprise Server versions 11, 12, and 15, and VMware ESXi versions prior to 7.0.
Technical Analysis
The root cause of this vulnerability is the lack of authentication for service registration in SLP. Attackers can exploit this weakness to register malicious services that could redirect legitimate traffic to their own services, leading to denial-of-service conditions.
The attack vector is primarily network-based, allowing attackers to launch attacks remotely without physical access to the target systems. The complexity of the attack is low, requiring no special knowledge or skills to execute.
No privileges are required to exploit the vulnerability, and user interaction is not needed. The attack can lead to a significant impact on availability, as legitimate services may become inaccessible during the attack.
Risk & Impact Analysis
Risk to organizations includes potential downtime and loss of service availability due to denial-of-service attacks. The vulnerability is significant given the widespread use of SLP in various networked environments, which may include critical infrastructure.
The presence of this vulnerability in commonly used services increases the blast radius for potential attacks, making it a priority for organizations to address. The urgency for remediation is critical, especially for systems that are exposed to untrusted networks.
Given the CVSS score of 7.5 and its classification in the KEV catalog, organizations should assess their exposure and implement the necessary mitigations.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
The following products and versions are affected by CVE-2023-29552:
1. NetApp SMI-S Provider 2. SUSE Manager Server 3. SUSE Linux Enterprise Server versions 11, 12, and 15 4. VMware ESXi (versions prior to 7.0) 5. Service Location Protocol
Mitigation & Remediation
Organizations should apply mitigations as outlined by the vendors or consider disabling the SLP service or port 427/UDP on all systems operating within untrusted networks, which includes direct Internet connections. Regular updates and patches should be implemented as they become available to mitigate this risk.
For further guidance on secure configurations, organizations may refer to our comprehensive guide on penetration testing and ongoing assessments.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor network traffic for unusual patterns associated with SLP service registration. Logging indicators that capture service registration requests can help identify unauthorized attempts to exploit this vulnerability.
Behavioral anomalies related to service registrations can provide insights into possible exploitation attempts. Additionally, monitoring for changes in service availability can help in recognizing ongoing attacks.
AppSecure Threat Intelligence Insight
CVE-2023-29552 represents a significant threat within networked environments, particularly for organizations that rely on the Service Location Protocol. The amplification potential of this vulnerability highlights the importance of monitoring and securing service registrations.
Security teams should take a proactive approach by regularly assessing their systems for vulnerabilities and implementing best practices for penetration testing to identify weaknesses.
As the threat landscape evolves, organizations must adapt their security strategies to mitigate risks associated with vulnerabilities like CVE-2023-29552. Ensuring robust security measures will safeguard against potential exploitation.
For further insights into cybersecurity trends and best practices, organizations can explore additional resources on our blog, including topics such as vulnerability management and cloud security assessments to enhance your organization's security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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