CVE-2018-1639 in Jazz Reporting Service
Summary
by MITRE
The Report Builder of Jazz Reporting Service 5.0 through 5.0.2 and 6.0 through 6.0.6 could allow an authenticated user to obtain sensitive information beyond its assigned privileges. IBM X-Force ID: 144579.
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Analysis
by VulDB Data Team • 06/06/2023
The vulnerability identified as CVE-2018-1639 affects the Jazz Reporting Service component of IBM's collaboration platform, specifically targeting versions 5.0 through 5.0.2 and 6.0 through 6.0.6. This issue represents a significant authorization bypass flaw that undermines the security model of the reporting service. The vulnerability stems from inadequate access control mechanisms within the Report Builder functionality, allowing authenticated users to escalate their privileges and access data that should be restricted based on their assigned permissions. This type of vulnerability falls under the CWE-285 category of Improper Authorization, which is classified as a critical security weakness in software systems where access controls are not properly enforced.
The technical implementation of this vulnerability exploits weaknesses in the privilege escalation mechanisms within the Jazz Reporting Service. When authenticated users interact with the Report Builder component, the system fails to properly validate whether the user has sufficient authorization levels to access specific reports or data sets. This allows users to craft requests that bypass normal access controls, potentially enabling them to view sensitive information belonging to other users or system components. The flaw essentially creates a path for authenticated users to discover and retrieve data that exceeds their intended access scope, representing a clear violation of the principle of least privilege that should govern all enterprise software systems.
The operational impact of this vulnerability extends beyond simple data exposure, as it can lead to comprehensive information disclosure across multiple organizational levels. Attackers who exploit this vulnerability can potentially access confidential business intelligence, strategic planning documents, user credentials, or other sensitive data that should remain restricted to authorized personnel only. The implications are particularly severe in enterprise environments where the Jazz Reporting Service is used for mission-critical business operations, as this could enable unauthorized access to proprietary information that could be exploited for competitive advantage or financial gain. This vulnerability also creates opportunities for further exploitation through lateral movement within the network, as the compromised access could serve as a foothold for additional attacks.
Organizations affected by this vulnerability should implement immediate mitigations including applying the vendor-provided security patches and updates, reviewing and strengthening access control policies, and conducting comprehensive security assessments of the reporting service components. The mitigation strategy should also include monitoring for unauthorized access attempts and implementing additional layers of security controls such as network segmentation and enhanced logging mechanisms. From an att&ck framework perspective, this vulnerability maps to techniques involving privilege escalation and credential access, potentially enabling adversaries to move laterally within the environment. Organizations should also consider implementing principle of least privilege enforcement mechanisms and regularly audit user access permissions to prevent unauthorized data access. The vulnerability highlights the importance of thorough security testing and validation of access control mechanisms in enterprise software platforms, particularly those handling sensitive business data.