CVE-2017-1126 in WebSphere Message Broker
Summary
by MITRE
IBM WebSphere Message Broker (IBM Integration Bus 9.0 and 10.0) could allow an unauthorized user to obtain sensitive information about software versions that could lead to further attacks. IBM X-Force ID: 121341.
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Analysis
by VulDB Data Team • 01/15/2021
The vulnerability identified as CVE-2017-1126 affects IBM WebSphere Message Broker versions 9.0 and 10.0, representing a significant information disclosure weakness that could enable attackers to gather critical system intelligence. This vulnerability resides within IBM Integration Bus, a messaging middleware platform that facilitates enterprise integration and data exchange between applications. The flaw specifically manifests when the system inadvertently exposes version information through error messages or response headers, creating an avenue for threat actors to gain insights into the underlying software stack configuration.
The technical implementation of this vulnerability stems from insufficient input validation and output sanitization mechanisms within the message broker's response handling processes. When certain malformed requests are processed, the system returns detailed version information in error responses or diagnostic messages, allowing unauthorized users to extract software versions, build numbers, and potentially other sensitive metadata about the running environment. This information disclosure occurs without proper authentication requirements, making it accessible to any attacker who can reach the system's network endpoints.
The operational impact of this vulnerability extends beyond simple information gathering, as it provides attackers with crucial intelligence for planning subsequent attacks. Knowledge of specific software versions enables adversaries to identify known vulnerabilities, exploits, and attack vectors that are specifically targeting those versions. This intelligence can facilitate more sophisticated attacks including privilege escalation, remote code execution, or denial of service conditions that leverage version-specific weaknesses. The vulnerability creates a reconnaissance opportunity that significantly reduces the effort required for attackers to develop targeted attack strategies against the affected systems.
Security professionals should implement multiple layers of mitigation to address this vulnerability effectively. Network segmentation and access controls should be enforced to limit exposure of the message broker to untrusted networks. Regular patch management procedures must be implemented to ensure timely deployment of IBM security fixes and updates. Input validation mechanisms should be strengthened to prevent malformed requests from triggering version information disclosure. Additionally, monitoring and logging should be enhanced to detect unusual request patterns that might indicate exploitation attempts. This vulnerability aligns with CWE-200, which addresses information exposure, and could potentially support techniques described in the ATT&CK framework under reconnaissance and initial access phases, particularly those involving information gathering and system enumeration activities. Organizations should also consider implementing web application firewalls and intrusion detection systems to help identify and block malicious requests that could exploit this information disclosure weakness.