CVE-2012-4838 in Flex System Integrated Management Module
Summary
by MITRE
IBM Flex System Chassis Management Module (CMM) and Integrated Management Module 2 (IMM2) allow local users to obtain sensitive information about (1) local accounts, (2) SSH private keys, (3) SSL/TLS private keys, (4) SNMPv3 communities, and (5) LDAP credentials by leveraging unspecified side effects of service or maintenance activity.
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Analysis
by VulDB Data Team • 02/09/2018
The vulnerability identified as CVE-2012-4838 affects IBM Flex System Chassis Management Module (CMM) and Integrated Management Module 2 (IMM2) systems, representing a critical information disclosure flaw that exposes sensitive authentication materials to local attackers. This vulnerability stems from unspecified side effects that occur during service or maintenance activities, creating unintended pathways for privilege escalation and credential harvesting. The affected systems are designed to manage and monitor IBM Flex System infrastructure, making them prime targets for attackers seeking to compromise enterprise data centers and server environments.
Technical exploitation of this vulnerability enables local users to access five distinct categories of sensitive information including local account credentials, SSH private keys, SSL/TLS private keys, SNMPv3 community strings, and LDAP authentication details. The flaw operates through unspecified service or maintenance activity side effects that inadvertently expose these critical security elements without proper access controls or authentication verification. This represents a classic case of insufficient information hiding and improper privilege separation within the management module's operational framework. The vulnerability manifests as a failure to properly isolate sensitive data during normal operational procedures, creating persistent exposure windows for local attackers who can leverage these side effects to gather comprehensive authentication material.
The operational impact of CVE-2012-4838 extends beyond simple credential theft, as the compromised information can enable attackers to establish persistent access to enterprise networks and systems. With access to SSH and SSL/TLS private keys, attackers can impersonate legitimate services and decrypt sensitive communications, while SNMPv3 community strings provide network monitoring access that could reveal infrastructure topology and operational details. LDAP credentials, when compromised, grant access to enterprise directory services and potentially enable lateral movement throughout the organization's network infrastructure. This vulnerability directly violates security principles outlined in the CWE taxonomy under CWE-200, which addresses "Information Exposure," and aligns with ATT&CK technique T1087.001 for "Account Discovery" and T1552 for "Unsecured Credentials." The impact is particularly severe in enterprise environments where these management modules control critical infrastructure components and serve as central points of administrative access.
Mitigation strategies for this vulnerability should focus on immediate firmware updates from IBM to address the root cause of the information disclosure. Organizations must implement strict access controls and privilege separation measures to prevent local users from accessing sensitive management functions. Network segmentation and monitoring should be enhanced to detect unusual access patterns or credential harvesting activities. Security configurations should be reviewed to ensure that maintenance activities do not inadvertently expose sensitive data through side effects. Regular security assessments and vulnerability scanning should be conducted to identify similar information disclosure vulnerabilities within the broader infrastructure ecosystem. The remediation process must also include comprehensive credential rotation for all compromised systems, including SSH keys, SSL certificates, SNMP communities, and LDAP credentials. Organizations should consider implementing additional logging and audit controls specifically for management module activities to detect and prevent exploitation attempts. This vulnerability highlights the importance of proper information hiding mechanisms and the need for security-by-design principles in management and monitoring systems, particularly those handling sensitive authentication data.