CVE-2024-8963
Ivanti Cloud Services Appliance (CSA) Path Traversal Vulnerability
Description
CVE-2024-8963 is a critical path traversal vulnerability in the Ivanti Cloud Services Appliance (CSA) before version 4.6 Patch 519, the gateway appliance used to provide secure remote access and cloud-based management for Ivanti endpoint management solutions. An unauthenticated remote attacker can exploit this flaw to traverse directory paths and access restricted functionality that should not be exposed to external users. With a CVSS v3.1 base score of 9.4 and the highest exploitability metrics, the vulnerability allows bypass of access controls on the CSA, potentially leading to complete appliance compromise. CISA has added CVE-2024-8963 to the Known Exploited Vulnerabilities catalog with a remediation deadline of October 10, 2024, and the EPSS score of 94.23% at the 99.9th percentile confirms this is among the most aggressively exploited vulnerabilities in enterprise gateway infrastructure.
KEV Information
CVSS Score
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:LOpen in CalculatorAffected Products
| Vendor | Product | Version |
|---|---|---|
| ivanti | endpoint manager cloud services appliance | 4.6 |
Multiple CVSS Assessments
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
References
Weakness Type
Path Traversal to Restricted Functionality Access
CVE-2024-8963 is a path traversal vulnerability in the Ivanti Cloud Services Appliance that enables access to restricted functionality. Path traversal (also known as directory traversal) occurs when an application uses user-supplied input to construct file or resource paths without properly neutralizing special characters like ../ sequences. By manipulating path components in HTTP requests, an attacker can break out of the intended directory structure and access files, directories, or application endpoints that are meant to be restricted. In this case, the CSA fails to properly validate request paths, allowing an unauthenticated attacker to traverse beyond the public-facing endpoints and reach administrative or internal functionality that should be protected by access controls.
Impact Analysis
Confidentiality is fully compromised by CVE-2024-8963. The Ivanti CSA serves as a gateway between cloud management services and the internal enterprise network. Accessing restricted functionality through path traversal can expose administrative interfaces, configuration data, authentication tokens, and potentially the credentials used to authenticate managed endpoints. The CSA handles sensitive communications between Ivanti's cloud infrastructure and the organization's internal endpoint management systems, making any unauthorized access exceptionally dangerous.
Integrity faces high impact as access to restricted functionality can allow the attacker to modify CSA configurations, alter access control policies, manipulate the communication channel between cloud services and managed endpoints, and potentially install backdoors or malicious configurations. The CSA's role as a trust bridge between external cloud services and the internal network means that integrity compromise can undermine the security of the entire endpoint management chain.
Availability is rated as low impact in the CVSS vector, suggesting that while the path traversal primarily enables unauthorized access and modification, it does not directly provide a mechanism for denial of service. However, the practical impact on availability can be significant if the attacker leverages the accessed functionality to disrupt CSA operations or the endpoint management services that depend on it. The EPSS score of 94.23% at the 99.9th percentile is exceptionally high, indicating massive exploitation activity. While ransomware association is listed as unknown, Ivanti CSA vulnerabilities have been actively targeted by sophisticated threat actors, and this vulnerability is known to be chained with other CSA vulnerabilities (such as CVE-2024-8190) for complete system compromise.
Exploit Maturity
CVE-2024-8963 has the highest level of exploit maturity with confirmed widespread active exploitation. CISA included it in the Known Exploited Vulnerabilities catalog with an accelerated deadline of October 10, 2024, and the EPSS score of 94.23% at the 99.9th percentile confirms massive targeting of vulnerable CSA instances.
Ivanti has published a security advisory with patch details and mitigation guidance. This vulnerability is particularly dangerous because it is known to be chained with other Ivanti CSA vulnerabilities, including CVE-2024-8190 (an authenticated command injection), creating an attack chain where the path traversal bypasses authentication controls and the command injection provides code execution. The unauthenticated nature (PR:N), network accessibility (AV:N), low complexity (AC:L), and no user interaction requirement (UI:N) make the path traversal trivially exploitable. Ivanti CSA appliances are inherently internet-facing by design since they serve as the gateway for cloud-based management, meaning the attack surface is directly exposed. The combination of internet-facing deployment, trivial exploitation, and active chaining with other vulnerabilities makes this an extremely urgent remediation priority.
Remediation
-
Apply Ivanti CSA 4.6 Patch 519 or later immediately. Install the security update documented in the Ivanti Security Advisory. Given the critical severity and active mass exploitation, treat this as an emergency patch. If possible, upgrade to Ivanti CSA 5.0 or later, which includes architectural security improvements beyond the specific patch.
-
Review CSA access logs for exploitation indicators. Examine web server access logs on the CSA for unusual path patterns that include directory traversal sequences (such as
../or encoded variants like%2e%2e%2f). Look for requests to administrative endpoints from external IP addresses and any access patterns that deviate from normal cloud service communication. -
Conduct forensic investigation on exposed appliances. Any internet-facing CSA running a version prior to 4.6 Patch 519 should be treated as potentially compromised. Check for unauthorized configuration changes, unexpected user accounts, modified files, and signs of lateral movement to internal systems. Pay particular attention to indicators suggesting exploitation was chained with CVE-2024-8190 or other CSA vulnerabilities.
-
Implement network-level monitoring for CSA traffic. Deploy intrusion detection signatures for path traversal patterns targeting Ivanti CSA endpoints. Monitor CSA network traffic for unexpected outbound connections, unusual data transfer volumes, or communication with known malicious infrastructure. Establish baseline traffic patterns to enable anomaly detection.
-
Rotate all credentials and certificates on the CSA. After patching, change all administrative passwords, API keys, and service credentials configured on the CSA. Replace SSL/TLS certificates and private keys stored on the appliance. Update any shared secrets used for communication between the CSA and Ivanti cloud services or managed endpoints, as these may have been exposed through the path traversal.
Technical Details
CVE-2024-8963 carries a CVSS v3.1 vector of CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L, yielding a critical base score of 9.4. The exploitability metrics are all at their worst: network-accessible (AV:N), low complexity (AC:L), no privileges required (PR:N), and no user interaction needed (UI:N). The impact is near-maximum with high confidentiality (C:H) and integrity (I:H) impact, with only availability at low (A:L).
The vulnerability resides in the web application layer of the Ivanti Cloud Services Appliance version 4.6 prior to Patch 519. The CSA exposes a web interface that handles communications between Ivanti's cloud management platform and the organization's internal endpoint management infrastructure. The path traversal flaw exists in the request routing logic, where the application fails to properly canonicalize and validate URL paths before mapping them to internal application resources.
By crafting HTTP requests with directory traversal sequences, an attacker can escape the public-facing URL namespace and access application endpoints that are intended to be restricted to authenticated administrators or internal services. The specific impact depends on which restricted functionality becomes accessible, but in the context of the CSA's role as a cloud gateway appliance, this can include administrative configuration interfaces, internal API endpoints, file system access, and service communication channels.
The scope is unchanged (S:U), meaning the vulnerability directly impacts the CSA itself. The availability impact is rated low (A:L) rather than high because the path traversal primarily enables access to restricted resources rather than directly causing service disruption. However, this vulnerability is frequently chained with CVE-2024-8190, an authenticated OS command injection vulnerability in the same product. The path traversal provides the unauthenticated access needed to reach the authenticated command injection endpoint, creating a full kill chain from unauthenticated network access to arbitrary command execution on the CSA. Affected versions include Ivanti CSA 4.6 prior to Patch 519.
Frequently Asked Questions
What is CVE-2024-8963?
CVE-2024-8963 is a critical path traversal vulnerability in the Ivanti Cloud Services Appliance (CSA) that allows an unauthenticated remote attacker to access restricted administrative functionality by manipulating URL paths. With a CVSS score of 9.4 and active mass exploitation, it represents a severe threat to organizations using the CSA for cloud-based endpoint management.
How does CVE-2024-8963 relate to CVE-2024-8190?
These two vulnerabilities are commonly chained together in active exploitation. CVE-2024-8963 (path traversal) allows an unauthenticated attacker to bypass access controls and reach restricted endpoints, while CVE-2024-8190 (command injection) requires authentication to exploit. By chaining them, attackers achieve unauthenticated remote code execution on the CSA, making it critical to patch both vulnerabilities.
Is my CSA exposed since it faces the internet by design?
Yes, this is a significant concern. The Ivanti CSA is designed to be internet-facing to facilitate cloud-based management of endpoints. This means the vulnerable web interface is inherently exposed to potential attackers. Patching is the only effective remediation, as restricting internet access to the CSA would break its core functionality.
What version do I need to be protected?
You need Ivanti CSA version 4.6 with Patch 519 or later applied. Alternatively, upgrading to Ivanti CSA 5.0 or later provides protection along with additional architectural security improvements. Any CSA 4.6 installation without Patch 519 is vulnerable and should be updated immediately.
Need Help With Vulnerability Management?
Our security experts can help you prioritize and remediate vulnerabilities effectively.