CVE-2012-0099 in Solaris
Summary
by MITRE
Unspecified vulnerability in Oracle Solaris 9, 10, and 11 Express allows remote attackers to affect availability via unknown vectors related to sshd.
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Analysis
by VulDB Data Team • 01/05/2025
The vulnerability identified as CVE-2012-0099 represents a significant security weakness in Oracle Solaris operating systems across multiple versions including Solaris 9, 10, and 11 Express. This unspecified vulnerability specifically targets the sshd daemon component which serves as the Secure Shell server implementation for remote access and system administration. The affected sshd service operates as a critical network service that handles authentication and secure communication protocols, making it a prime target for attackers seeking to disrupt system availability. The vulnerability's classification as unspecified indicates that Oracle did not provide detailed technical information about the exact nature of the flaw during the initial disclosure, though the impact was clearly defined as affecting system availability through unknown vectors.
The technical flaw resides within the sshd implementation in Oracle Solaris, where attackers can exploit this weakness to cause service disruption or complete system unavailability. This type of vulnerability falls under the broader category of availability attacks that target critical system services. The sshd daemon is essential for remote system administration and secure access to Solaris systems, making any disruption to its functionality potentially catastrophic for system operations. The unspecified nature of the vulnerability suggests that it likely involves a denial of service condition that can be triggered remotely without requiring authentication, potentially through malformed packets or specific sequence of communications that cause the sshd service to crash or become unresponsive. This aligns with common attack patterns targeting network services where malformed input can lead to service termination or resource exhaustion.
From an operational impact perspective, this vulnerability creates substantial risk for organizations running Oracle Solaris systems, particularly those relying heavily on remote administration capabilities. The ability for remote attackers to affect availability through sshd means that critical infrastructure components could be rendered inaccessible without proper mitigation. Systems that depend on secure remote access for maintenance, monitoring, and administrative tasks face potential operational disruption that could cascade across entire network infrastructures. The impact extends beyond simple service interruption as organizations may experience extended downtime while implementing patches or workarounds, potentially affecting business continuity and service level agreements. Organizations with multiple Solaris systems may face coordinated attacks that systematically compromise sshd services across their network, leading to widespread availability issues that require immediate response and remediation efforts.
The vulnerability's classification as affecting availability through unknown vectors related to sshd aligns with common attack patterns found in the ATT&CK framework under the T1499 category of Network Denial of Service. This attack pattern involves techniques that disrupt network services or make them unavailable to legitimate users, often through exploitation of service weaknesses. The vulnerability also corresponds to CWE-119 which describes weaknesses in the storage of data where an attacker can cause a service to crash or behave unpredictably. Organizations should implement immediate mitigation strategies including applying Oracle's security patches, configuring firewalls to restrict sshd access, and implementing network monitoring to detect potential exploitation attempts. Additional protective measures should include regular security assessments of sshd configurations, implementing intrusion detection systems specifically monitoring for ssh-related anomalies, and maintaining detailed incident response procedures for handling service availability issues. The remediation process requires careful planning to avoid service disruption during patch deployment while ensuring that all affected Solaris systems receive proper updates to prevent exploitation.