CVE-2012-0563 in Solaris
Summary
by MITRE
Unspecified vulnerability in Oracle Solaris 9, 10, and 11 allows local users to affect availability via unknown vectors related to Kerberos/klist.
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Analysis
by VulDB Data Team • 03/26/2021
The vulnerability identified as CVE-2012-0563 represents a significant security flaw within Oracle Solaris operating systems across versions 9, 10, and 11. This issue specifically targets the Kerberos authentication system and its associated klist utility, which serves as a command-line tool for displaying Kerberos ticket information. The vulnerability falls under the category of availability impact, meaning that local attackers can potentially disrupt system operations without necessarily gaining unauthorized access to sensitive data or system resources. The unspecified nature of the vulnerability vectors suggests that the exact technical mechanisms enabling the availability disruption remain unclear, though the focus on Kerberos and klist indicates a deep integration point within the operating system's authentication infrastructure.
The technical flaw manifests within the Kerberos implementation of Solaris, particularly when processing or displaying Kerberos tickets through the klist command. This vulnerability enables local users to exploit weaknesses in how the system handles Kerberos authentication data structures or command processing routines. The attack surface is limited to local users who already have access to the system, but the potential impact extends beyond simple privilege escalation to include system availability compromise. The vulnerability's relationship to the klist utility implies that malformed or specially crafted inputs could trigger unexpected behavior in the Kerberos subsystem, potentially leading to denial of service conditions that affect authentication services and overall system stability.
From an operational perspective, this vulnerability presents a serious risk to enterprise environments relying on Solaris systems for critical infrastructure services. Local users could exploit this weakness to cause service disruption, potentially affecting authentication services that other system components depend upon. The availability impact means that legitimate users might experience authentication failures or system unresponsiveness, which could cascade into broader operational issues throughout the enterprise. Given that Kerberos is commonly used for single sign-on and enterprise authentication, a successful exploitation could affect multiple services and applications that depend on Kerberos ticket validation and management. The vulnerability's presence in multiple Solaris versions indicates a widespread exposure across different enterprise environments, making it particularly concerning for organizations maintaining legacy systems.
Mitigation strategies for CVE-2012-0563 should prioritize immediate patch deployment from Oracle, as this represents a known vulnerability with documented exploitation potential. Organizations should implement monitoring for unusual authentication service behavior or system resource consumption patterns that might indicate exploitation attempts. Network segmentation and least privilege access controls can help limit the potential impact of local exploitation, though these measures cannot prevent the vulnerability from being exploited by users who already have system access. System administrators should also consider implementing additional logging and auditing of Kerberos-related activities to detect anomalous behavior patterns. The vulnerability aligns with CWE-119 which addresses improper access to memory, and potentially relates to ATT&CK technique T1499 which covers network denial of service attacks. Organizations should also review their overall security posture and consider implementing more robust access controls for privileged system utilities to prevent exploitation by unauthorized local users. Regular vulnerability assessments and security updates should be prioritized to address similar issues before they can be exploited in production environments.