CVE-2024-47119: IBM Storage Defender Auth Bypass Flaw

CVE-2024-47119 Overview

CVE-2024-47119 affects IBM Storage Defender - Resiliency Service versions 2.0.0 through 2.0.9. The product does not properly validate certificates during communication between the host and client. An attacker positioned in the communication path can spoof a trusted entity and impersonate legitimate services. The flaw maps to improper certificate validation [CWE-295] and is exploitable over the network without authentication or user interaction.

Critical Impact
A network-positioned attacker can intercept and spoof trusted communications, exposing sensitive data exchanged between IBM Storage Defender - Resiliency Service components.

Affected Products

IBM Storage Defender - Resiliency Service 2.0.0
IBM Storage Defender - Resiliency Service versions 2.0.1 through 2.0.8
IBM Storage Defender - Resiliency Service 2.0.9

Discovery Timeline

2024-12-18 - CVE-2024-47119 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-47119

Vulnerability Analysis

IBM Storage Defender - Resiliency Service fails to properly validate the X.509 certificate presented by a remote peer during TLS communication. This certificate validation weakness [CWE-295] allows an attacker on the network path to present a certificate that the client accepts as trusted. The result is a man-in-the-middle condition affecting confidentiality of data exchanged between the host and client.

The vulnerability impacts confidentiality only. Integrity and availability remain unaffected based on the published CVSS metrics. The attack does not require credentials or user interaction, which lowers the barrier for exploitation in enterprise environments where Storage Defender components communicate across network segments.

Root Cause

The root cause is improper certificate validation logic within the Resiliency Service. The service accepts certificates without enforcing the full chain of trust, hostname verification, or revocation status. An attacker who can intercept traffic between Storage Defender components can present a forged or untrusted certificate and the service will treat the peer as legitimate.

Attack Vector

Exploitation requires the attacker to occupy a network position between the host and client. Techniques include ARP spoofing, DNS poisoning, BGP hijacking, or compromise of an intermediate network device. Once positioned, the attacker terminates the TLS session with a forged certificate and proxies traffic to the legitimate endpoint, extracting sensitive data from the cleartext session.

No proof-of-concept code is publicly available, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog. The EPSS score indicates a low probability of exploitation in the near term.

Detection Methods for CVE-2024-47119

Indicators of Compromise

Unexpected TLS certificates presented by Storage Defender - Resiliency Service endpoints that do not match the issuing internal certificate authority.
Anomalous network paths or hop counts for traffic between Storage Defender hosts and clients.
Repeated TLS session renegotiation or certificate change events in service logs.

Detection Strategies

Inspect TLS handshakes between Resiliency Service components and alert on certificates not signed by the approved internal CA.
Baseline expected certificate fingerprints for Storage Defender endpoints and flag deviations.
Correlate ARP table changes, DNS response anomalies, and routing changes with Storage Defender traffic flows.

Monitoring Recommendations

Enable verbose TLS logging on Storage Defender hosts to capture peer certificate details and validation outcomes.
Forward network flow data and TLS metadata to a centralized analytics platform for ongoing inspection.
Monitor IBM support channels and the IBM Support Page for updated advisories and fixed-version availability.

How to Mitigate CVE-2024-47119

Immediate Actions Required

Inventory all IBM Storage Defender - Resiliency Service deployments and confirm version numbers between 2.0.0 and 2.0.9.
Apply the fix referenced in the IBM Support Page as soon as it is available in your environment.
Restrict network reachability of Resiliency Service endpoints to trusted management segments only.

Patch Information

IBM published remediation guidance for CVE-2024-47119 on the IBM Support Page. Administrators should upgrade to the fixed release identified by IBM and follow the vendor's upgrade procedure for Storage Defender - Resiliency Service.

Workarounds

Segment Storage Defender - Resiliency Service traffic onto isolated VLANs or dedicated management networks to reduce exposure to man-in-the-middle positioning.
Enforce mutual TLS authentication at the network layer using a reverse proxy or service mesh that performs strict certificate validation.
Monitor and alert on certificate changes for known Storage Defender endpoints until the patched version is deployed.

bash

# Example: verify the certificate presented by a Storage Defender endpoint
openssl s_client -connect <storage-defender-host>:<port> -showcerts </dev/null \
  | openssl x509 -noout -issuer -subject -fingerprint -sha256