CVE-2007-5330 in BrightStor ARCServe BackUp
Summary
by MITRE
The cadbd RPC service in CA BrightStor ARCServe BackUp v9.01 through R11.5, and Enterprise Backup r10.5, allows remote attackers to (1) execute arbitrary code via stack-based buffer overflows in unspecified RPC procedures, and (2) trigger memory corruption related to the use of "handle" RPC arguments as pointers.
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Analysis
by VulDB Data Team • 07/27/2019
The vulnerability identified as CVE-2007-5330 affects the cadbd RPC service component within CA BrightStor ARCServe Backup software across multiple versions including v9.01 through R11.5 and Enterprise Backup r10.5. This represents a critical security flaw that exposes organizations to potential remote code execution attacks through improperly validated input handling within the RPC infrastructure. The vulnerability manifests through two distinct but related attack vectors that collectively compromise the integrity and confidentiality of backup systems. The RPC service operates as a critical component for remote management and backup operations, making it an attractive target for malicious actors seeking persistent access to enterprise backup environments.
The technical implementation of this vulnerability stems from stack-based buffer overflow conditions occurring in unspecified RPC procedures within the cadbd service. These buffer overflows occur when the service fails to properly validate the length of input data received through RPC calls, allowing attackers to craft malicious payloads that exceed allocated buffer space. The second aspect involves improper handling of "handle" RPC arguments where these values are treated as pointers rather than proper handle references, leading to memory corruption scenarios. This dual nature of the vulnerability demonstrates poor input validation practices and unsafe memory management within the RPC processing pipeline. The flaw directly maps to CWE-121 Stack-based Buffer Overflow and CWE-822 Untrusted Pointer Dereference, both of which are fundamental weaknesses in software security design that enable arbitrary code execution and system compromise.
The operational impact of CVE-2007-5330 extends beyond simple remote code execution to encompass complete system compromise and data integrity breaches within backup environments. Attackers exploiting this vulnerability can gain unauthorized access to backup servers, potentially leading to data exfiltration, system manipulation, or the deployment of persistent backdoors within enterprise backup infrastructures. The nature of backup systems makes them particularly valuable targets since they often contain sensitive organizational data and may operate with elevated privileges. This vulnerability particularly impacts organizations using legacy backup solutions where patch management may be delayed or incomplete, creating extended windows of exposure. The attack surface is further expanded by the RPC nature of the service, which typically operates on well-known ports and may be accessible across network boundaries without proper firewall restrictions.
Mitigation strategies for CVE-2007-5330 should focus on immediate patching of affected software versions, as CA has released security updates to address the buffer overflow conditions and handle pointer management issues. Network segmentation and firewall rules should be implemented to restrict access to the cadbd RPC service ports, limiting exposure to trusted networks only. Additionally, monitoring and logging should be enhanced to detect anomalous RPC traffic patterns that may indicate exploitation attempts. The vulnerability demonstrates the importance of proper input validation and memory management practices, aligning with ATT&CK technique T1059.007 for Command and Scripting Interpreter and T1068 for Exploitation for Privilege Escalation. Organizations should also implement regular security assessments of backup infrastructure and maintain up-to-date inventory of all RPC services to identify and remediate similar vulnerabilities across their enterprise environments.