CVE-2024-53675 Overview
CVE-2024-53675 is an XML External Entity (XXE) injection vulnerability affecting HPE Insight Remote Support. The flaw allows unauthenticated remote attackers to submit crafted XML payloads that reference external entities, resulting in disclosure of sensitive information from the underlying system. The vulnerability is tracked under CWE-611 (Improper Restriction of XML External Entity Reference) and CWE-91 (XML Injection). HPE published advisory hpesbgn04731 to address the issue. With an EPSS score of 83.94% (99.656 percentile), the probability of exploitation activity is significantly elevated relative to most published CVEs.
Critical Impact
Unauthenticated attackers can read arbitrary files and exfiltrate sensitive configuration data from HPE Insight Remote Support servers over the network without user interaction.
Affected Products
- HPE Insight Remote Support (all versions prior to the fix referenced in hpesbgn04731)
- Deployments exposing the Insight Remote Support XML processing endpoints to untrusted networks
- Environments using vulnerable XML parser configurations within the product
Discovery Timeline
- 2024-11-26 - CVE-2024-53675 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-53675
Vulnerability Analysis
HPE Insight Remote Support processes XML input without properly disabling external entity resolution. An attacker can submit an XML document containing a DOCTYPE declaration that defines an external entity pointing to a local file URI or an attacker-controlled network resource. When the XML parser resolves the entity, the referenced content is embedded into the parsed document and returned through application responses or out-of-band channels.
The weakness maps to CWE-611, where an XML parser does not restrict resolution of external entities, and CWE-91, where XML injection allows manipulation of the document structure. Information disclosure is the documented impact, consistent with the CVSS vector indicating high confidentiality impact and no integrity or availability effect.
Root Cause
The underlying cause is an XML parser instantiated without secure defaults. Features such as disallow-doctype-decl, external general entity resolution, and external parameter entity resolution are not disabled. This permits the parser to fetch and inline external resources referenced by entity declarations during document parsing.
Attack Vector
The attack is remote and network-based. An attacker sends a malicious XML payload to an Insight Remote Support endpoint that accepts XML input. The payload defines an external entity referencing a local file (for example, file:///etc/passwd on Linux or file:///C:/Windows/win.ini on Windows) or an HTTP/HTTPS URL controlled by the attacker. Authentication is not required, and no user interaction is needed.
No verified public exploit code is currently available for CVE-2024-53675. See the HPE Security Advisory hpesbgn04731 for vendor-supplied technical details.
Detection Methods for CVE-2024-53675
Indicators of Compromise
- Inbound HTTP/HTTPS requests to Insight Remote Support containing XML payloads with <!DOCTYPE and <!ENTITY declarations
- Outbound DNS or HTTP requests from the Insight Remote Support host to unexpected external destinations, indicating out-of-band XXE exfiltration
- Application logs showing XML parsing errors referencing SYSTEM identifiers or file://, http://, and ftp:// URI schemes
- Unexpected reads of sensitive system files by the Insight Remote Support service account
Detection Strategies
- Inspect web traffic for XML requests containing external entity declarations or unusual DOCTYPE headers
- Correlate inbound XML requests with subsequent outbound network connections from the application host
- Enable verbose XML parser logging to capture entity resolution attempts and failures
- Hunt for process activity where the Insight Remote Support service reads files outside its normal working directories
Monitoring Recommendations
- Forward Insight Remote Support application and web server logs to a centralized analytics platform for rule-based identification of XXE patterns
- Monitor egress traffic from management servers and alert on connections to non-allowlisted external hosts
- Track file access events on configuration, credential, and key material paths on the host running Insight Remote Support
How to Mitigate CVE-2024-53675
Immediate Actions Required
- Apply the fixed version of HPE Insight Remote Support as documented in advisory hpesbgn04731
- Restrict network access to Insight Remote Support management interfaces using firewall rules or network segmentation
- Review historical web and application logs for prior XML requests containing external entity declarations
- Rotate credentials and secrets stored on the Insight Remote Support host if compromise is suspected
Patch Information
HPE has released a fixed version of Insight Remote Support. Refer to the HPE Security Advisory hpesbgn04731 for affected versions, fixed releases, and upgrade instructions. Patching is the only complete remediation for this vulnerability.
Workarounds
- Place Insight Remote Support behind a reverse proxy or web application firewall configured to block XML payloads containing <!DOCTYPE and <!ENTITY declarations
- Limit inbound connectivity to the Insight Remote Support service to a defined allowlist of management hosts
- Block outbound network access from the Insight Remote Support host to the internet except for HPE-required destinations to neutralize out-of-band XXE channels
- Increase monitoring on the host until patches can be deployed
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
