CVE-2019-2545 in Solaris
Summary
by MITRE
Vulnerability in the Oracle Solaris component of Oracle Sun Systems Products Suite (subcomponent: LDoms IO). Supported versions that are affected are 10 and 11. Easily exploitable vulnerability allows unauthenticated attacker with logon to the infrastructure where Oracle Solaris executes to compromise Oracle Solaris. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Solaris. CVSS 3.0 Base Score 4.0 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).
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Analysis
by VulDB Data Team • 06/28/2023
The vulnerability identified as CVE-2019-2545 resides within the Oracle Solaris operating system, specifically within the LDoms IO subcomponent of the Sun Systems Products Suite. This flaw affects Oracle Solaris versions 10 and 11, representing a significant security concern for enterprise environments that rely on these systems. The vulnerability operates at the system level and requires local access to the target infrastructure, making it particularly concerning for organizations where physical or network access controls may be insufficient. The attack vector is classified as local access, meaning an attacker must already have some level of access to the system to exploit this weakness, though this does not necessarily require elevated privileges. The CVSS score of 4.0 reflects the availability impact, indicating that successful exploitation could lead to partial denial of service conditions that compromise system functionality.
The technical nature of this vulnerability stems from insufficient input validation or access control mechanisms within the LDoms IO component, which is responsible for managing input/output operations in Oracle Solaris domains. This flaw allows an attacker with local access to manipulate system resources in a way that can cause partial system disruption. The vulnerability's classification as easily exploitable indicates that the attack requires minimal skill or specialized tools, making it particularly dangerous in environments where access controls are not properly enforced. The lack of authentication requirements for exploitation suggests that the flaw may be related to improper privilege checks or insufficient validation of system calls within the IO handling mechanisms. This type of vulnerability typically falls under CWE-284 which addresses improper access control issues in software systems.
The operational impact of CVE-2019-2545 extends beyond simple system availability concerns, potentially affecting business continuity and operational stability for organizations running affected Oracle Solaris versions. A successful attack could result in partial denial of service conditions that disrupt critical services, particularly in virtualized environments where LDoms are extensively used for system partitioning and resource management. The partial DOS impact means that while complete system compromise may not occur, the affected system could experience degraded performance or specific service disruptions that could cascade through dependent applications and services. Organizations relying on Oracle Solaris for mission-critical applications may face significant operational challenges if this vulnerability is exploited, as it could affect the reliability of virtualized infrastructure that supports multiple business applications. This vulnerability aligns with ATT&CK technique T1499 which covers network denial of service attacks, though the local access requirement makes this a more specific variant of system-level disruption.
Mitigation strategies for CVE-2019-2545 should focus on both immediate defensive measures and long-term security improvements. Organizations should prioritize applying Oracle's official security patches and updates as soon as they become available, as these patches are specifically designed to address the access control weaknesses within the LDoms IO component. Network segmentation and access control measures should be enhanced to limit local access points to Oracle Solaris systems, reducing the attack surface for potential exploitation. System administrators should implement monitoring solutions that can detect unusual I/O operations or resource access patterns that might indicate exploitation attempts. The vulnerability's local access requirement means that physical security controls, network access controls, and privilege management should be reviewed and strengthened to prevent unauthorized individuals from gaining the necessary access to exploit this flaw. Additionally, regular security assessments should be conducted to identify similar access control vulnerabilities in other system components and ensure that the overall security posture remains robust against both internal and external threats.