CVE-2003-1060 in Solaris
Summary
by MITRE
The NFS Server for Solaris 7, 8, and 9 allows remote attackers to cause a denial of service (UFS panic) via certain invalid UFS requests, which triggers a null dereference.
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Analysis
by VulDB Data Team • 03/09/2021
The vulnerability identified as CVE-2003-1060 represents a critical denial of service flaw within the Network File System (NFS) implementation of Solaris operating systems versions 7, 8, and 9. This issue stems from inadequate input validation mechanisms within the UFS (Unix File System) subsystem that processes NFS requests. The vulnerability specifically manifests when the NFS server receives malformed or invalid UFS requests that are not properly sanitized before processing. These malformed requests exploit a fundamental flaw in the kernel's request handling logic where the system attempts to dereference a null pointer during the processing of UFS operations, leading to an immediate system panic and complete service disruption. The attack vector is entirely remote, meaning that an unauthenticated attacker can exploit this vulnerability from any network location without requiring prior access credentials or system compromise. The technical root cause aligns with CWE-476 which describes null pointer dereference conditions, while also demonstrating characteristics of CWE-121 which involves stack-based buffer overflow vulnerabilities in kernel space operations.
The operational impact of this vulnerability extends beyond simple service interruption to potentially compromise entire network infrastructure dependencies that rely on NFS services for file access and storage operations. When exploited successfully, the vulnerability causes the affected Solaris systems to crash and reboot automatically, resulting in complete denial of service for all NFS clients that depend on the compromised server. This disruption affects not only individual file access operations but can cascade through enterprise environments where multiple systems depend on shared storage resources provided through NFS protocols. The vulnerability's exploitation does not require any special privileges or authentication, making it particularly dangerous as it can be triggered by any remote entity with network access to the affected NFS server. Organizations running Solaris 7, 8, or 9 systems that provide NFS services are at significant risk of operational disruption and potential business continuity impacts when this vulnerability remains unpatched.
Mitigation strategies for CVE-2003-1060 should prioritize immediate patch deployment from Oracle as the primary remediation approach, as the vulnerability affects core kernel components that cannot be effectively protected through network segmentation or firewall rules alone. Network administrators should implement strict access controls to limit exposure of NFS services to only trusted networks and implement monitoring solutions to detect unusual NFS traffic patterns that might indicate exploitation attempts. The vulnerability's characteristics align with ATT&CK technique T1499.004 which involves network denial of service attacks, and organizations should consider implementing intrusion detection systems that can identify malformed UFS requests. Additionally, system administrators should conduct comprehensive vulnerability assessments to identify all NFS server instances within their environment and ensure that proper patch management procedures are in place to prevent similar vulnerabilities from remaining unaddressed. The lack of any viable workarounds makes this vulnerability particularly concerning as organizations cannot simply disable problematic features without losing essential file sharing capabilities that many enterprise applications depend upon.