CVE-2020-2578 in Solaris
Summary
by MITRE
Vulnerability in the Oracle Solaris product of Oracle Systems (component: Kernel). The supported version that is affected is 11. Easily exploitable vulnerability allows unauthenticated attacker with network access via SMB to compromise Oracle Solaris. While the vulnerability is in Oracle Solaris, attacks may significantly impact additional products. 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 5.8 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L).
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Analysis
by VulDB Data Team • 03/23/2024
The vulnerability identified as CVE-2020-2578 resides within the Oracle Solaris operating system kernel component, specifically affecting version 11 which represents a critical security weakness in the enterprise Unix-based operating system. This vulnerability manifests as a network-based attack vector that can be exploited by unauthenticated remote attackers, making it particularly dangerous in environments where Solaris systems are exposed to external networks. The vulnerability's classification as easily exploitable indicates that minimal technical expertise is required to leverage the flaw, potentially enabling widespread compromise across organizations utilizing affected Solaris versions.
The technical nature of this vulnerability stems from a flaw within the SMB (Server Message Block) protocol implementation within the Solaris kernel, which creates an avenue for unauthorized access and system manipulation. The CVSS 3.0 scoring of 5.8 reflects the moderate severity of the threat, with the availability impact component rated at level L, indicating that successful exploitation could lead to partial denial of service conditions. This particular weakness allows attackers to potentially disrupt normal system operations without necessarily gaining full system control or access to sensitive data, though the potential for broader impact exists given the kernel-level nature of the vulnerability.
From an operational standpoint, this vulnerability presents significant risk to organizations relying on Oracle Solaris for mission-critical applications and infrastructure services. The partial denial of service impact could severely affect business operations, particularly in environments where Solaris systems host essential services such as file sharing, print services, or database operations that depend on SMB protocol functionality. The fact that this vulnerability affects the kernel component means that any successful exploitation could potentially destabilize core system functions, leading to cascading failures that impact multiple applications and services running on the affected systems.
The security implications extend beyond the immediate Solaris environment as attacks leveraging this vulnerability may have broader impacts on interconnected systems and network infrastructure. Organizations should consider the potential for lateral movement within their networks if attackers successfully exploit this weakness, as compromised Solaris systems could serve as launching points for further attacks against other networked assets. The CVSS vector analysis reveals that this vulnerability can be exploited over the network without requiring authentication, user interaction, or privilege escalation, making it particularly attractive to automated attack tools and opportunistic threat actors.
Mitigation strategies should prioritize immediate patching of affected Solaris systems through Oracle's security updates, as this represents the most effective defense against exploitation. Network segmentation and firewall rules should be implemented to restrict SMB protocol access to only necessary systems and users, while monitoring solutions should be deployed to detect unusual network traffic patterns that might indicate exploitation attempts. Organizations should also conduct comprehensive vulnerability assessments to identify all systems running affected Solaris versions and establish incident response procedures specifically addressing potential SMB-based attacks. The vulnerability's characteristics align with ATT&CK technique T1210 - Exploitation of Remote Services, highlighting the need for proper service hardening and access controls as recommended in cybersecurity frameworks and industry best practices for protecting enterprise environments against similar kernel-level vulnerabilities.