CVE-2012-2972 in ARCserve Backup
Summary
by MITRE
The (1) server and (2) agent components in CA ARCserve Backup r12.5, r15, and r16 on Windows do not properly validate RPC requests, which allows remote attackers to cause a denial of service (service crash) via a crafted request.
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Analysis
by VulDB Data Team • 12/27/2024
The vulnerability identified as CVE-2012-2972 affects the server and agent components of CA ARCserve Backup versions 12.5, 15, and 16 running on Windows operating systems. This issue stems from insufficient validation of remote procedure call requests within the backup software's architecture, creating a critical security gap that can be exploited by remote attackers to disrupt service availability. The flaw exists in the inter-process communication mechanisms that govern how backup operations are coordinated between server and agent components, making it particularly dangerous in enterprise environments where backup services are critical for data recovery operations.
The technical root cause of this vulnerability lies in the improper input validation of RPC messages received by both server and agent processes. When these components receive malformed or crafted RPC requests, they fail to properly sanitize or validate the incoming data before processing it, leading to potential buffer overflows or memory corruption conditions. This weakness falls under the CWE-20 category of "Improper Input Validation" and represents a classic example of how inadequate security controls in network services can lead to denial of service conditions. The vulnerability specifically affects the RPC communication layer that enables remote management and backup operations, making it accessible to attackers who can send specially crafted requests over the network.
The operational impact of this vulnerability is significant for organizations relying on CA ARCserve Backup for their data protection infrastructure. Remote attackers can exploit this weakness to cause service crashes, effectively rendering backup operations unavailable and potentially leading to extended downtime for critical business processes. The denial of service condition can be triggered without requiring authentication, making it particularly dangerous as it can be exploited by anyone with network access to the affected systems. This vulnerability directly impacts the availability component of the CIA triad and can be classified under the ATT&CK technique T1499.004 for "Network Denial of Service" in the context of backup and recovery systems.
Organizations should implement immediate mitigations including applying the vendor-provided patches and updates released to address this vulnerability, which typically involve strengthening RPC request validation mechanisms within the backup software. Network segmentation and firewall rules should be implemented to restrict access to backup service ports to only authorized management systems, reducing the attack surface. Additionally, monitoring and logging of RPC communication should be enhanced to detect anomalous request patterns that might indicate exploitation attempts. The vulnerability demonstrates the importance of proper input validation in network services and highlights the need for robust security testing of enterprise backup solutions, particularly those with remote management capabilities that operate in untrusted network environments.