CVE-2023-39250: Dell Replay Manager Information Disclosure

CVE-2023-39250 Overview

CVE-2023-39250 is an information disclosure vulnerability affecting Dell Storage Integration Tools for VMware (DSITV), Dell Storage vSphere Client Plugin (DSVCP), and Replay Manager for VMware (RMSV). This vulnerability allows a local low-privileged malicious user to potentially retrieve an encryption key that could be leveraged in further attacks against the affected systems.

Critical Impact

A local attacker with low privileges can extract sensitive encryption keys, potentially enabling further compromise of Dell storage management infrastructure within VMware environments.

Affected Products

• Dell Storage Integration Tools for VMware (DSITV) versions prior to 6.1.1
• Dell Storage vSphere Client Plugin (DSVCP) versions prior to 6.1.1
• Dell Replay Manager for VMware (RMSV) versions prior to 3.1.2

Discovery Timeline

• August 16, 2023 - CVE-2023-39250 published to NVD
• November 21, 2024 - Last updated in NVD database

Technical Details for CVE-2023-39250

Vulnerability Analysis

This vulnerability stems from improper handling of sensitive cryptographic information within Dell's VMware storage integration tools. The affected products fail to adequately protect encryption keys from local users, allowing attackers with low-privilege access to retrieve these sensitive credentials. The weakness is classified under CWE-540 (Inclusion of Sensitive Information in Source Code) and CWE-668 (Exposure of Resource to Wrong Sphere), indicating that encryption keys may be stored in accessible locations or exposed through improper resource protection mechanisms.

The local attack vector means an attacker would need some level of access to the system running the vulnerable Dell software, but once that access is obtained, no user interaction is required to exploit the vulnerability. The successful exploitation results in high confidentiality impact, as the exposed encryption keys could provide access to protected storage resources or enable decryption of sensitive data.

Root Cause

The root cause of CVE-2023-39250 relates to improper protection of sensitive cryptographic material. The vulnerability appears to involve encryption keys being stored or accessible in a manner that allows local users with limited privileges to retrieve them. This could involve hardcoded credentials, improper file permissions on key storage locations, or exposure of keys through application interfaces accessible to low-privileged users.

Attack Vector

This is a local attack vector vulnerability requiring the attacker to have some level of authenticated access to the system where the vulnerable Dell software is installed. The attack follows this general pattern:

1. The attacker gains local access to a system running DSITV, DSVCP, or RMSV
2. Using only low-level privileges, the attacker enumerates accessible resources
3. The attacker identifies and extracts the exposed encryption key material
4. The retrieved encryption keys can then be used to facilitate further attacks, potentially including accessing encrypted storage resources or impersonating legitimate services

The vulnerability does not require elevated privileges or user interaction to exploit, making it relatively straightforward for any authenticated local user to leverage.

Detection Methods for CVE-2023-39250

Indicators of Compromise

• Unusual file access patterns to Dell storage integration configuration directories
• Unexpected read operations on credential or key storage files by low-privileged accounts
• Anomalous process activity from user accounts accessing Dell DSITV, DSVCP, or RMSV components
• Evidence of enumeration activity targeting Dell storage management tools

Detection Strategies

• Monitor file access logs for unauthorized reads of Dell storage integration configuration files
• Implement alerting on access to sensitive directories by non-administrative users
• Deploy endpoint detection solutions capable of identifying credential harvesting behaviors
• Audit user activity on systems hosting Dell VMware storage integration tools

Monitoring Recommendations

• Enable detailed audit logging for file system access on servers running affected Dell software
• Configure SIEM rules to detect unusual access patterns to Dell storage management directories
• Implement user behavior analytics to identify anomalous local user activity
• Regularly review access logs for systems hosting VMware storage integration components

How to Mitigate CVE-2023-39250

Immediate Actions Required

• Upgrade Dell Storage Integration Tools for VMware (DSITV) to version 6.1.1 or later
• Upgrade Dell Storage vSphere Client Plugin (DSVCP) to version 6.1.1 or later
• Upgrade Dell Replay Manager for VMware (RMSV) to version 3.1.2 or later
• Review and restrict local user access to systems hosting affected Dell software

Patch Information

Dell has released security updates addressing this vulnerability as documented in Dell Security Advisory DSA-2023-282. Organizations should obtain the patched versions through Dell's official support channels and apply updates according to their change management procedures.

Workarounds

• Restrict local user access to systems running the affected Dell software to only necessary administrative accounts
• Implement strict access controls and principle of least privilege for all users on affected systems
• Monitor and audit all local user activity on systems hosting Dell VMware storage integration tools
• Consider network segmentation to limit lateral movement if the vulnerability is exploited

# Verify installed Dell DSITV/DSVCP version (example path - adjust as needed)
# Check version and upgrade if below 6.1.1
cat /opt/dell/storage/dsitv/version.txt

# Restrict permissions on Dell storage integration directories
chmod 750 /opt/dell/storage/
chown -R root:dell-admins /opt/dell/storage/