CVE-2015-6946 in AccuRev
Summary
by MITRE
Stack-based buffer overflow in the Reprise License Manager service in Borland AccuRev allows remote attackers to execute arbitrary code via the licfile parameter.
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Analysis
by VulDB Data Team • 12/19/2017
The CVE-2015-6946 vulnerability represents a critical stack-based buffer overflow flaw within the Reprise License Manager service component of Borland AccuRev software. This vulnerability specifically targets the licfile parameter handling mechanism, creating a pathway for remote attackers to inject malicious code into the system. The flaw exists in the license management service that operates as a network daemon, making it accessible over the network and susceptible to exploitation by unauthorized users. The buffer overflow condition occurs when the service processes the licfile parameter without proper bounds checking, allowing an attacker to overwrite adjacent memory locations on the stack. This type of vulnerability falls under the CWE-121 category of Stack-based Buffer Overflow, which is classified as a serious security weakness in software development practices. The vulnerability demonstrates poor input validation and memory management practices that are commonly associated with insecure coding methodologies.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with the capability to completely compromise the affected system. When successfully exploited, the buffer overflow allows remote code execution with the privileges of the running service, typically resulting in full system compromise. The Reprise License Manager service usually operates with elevated privileges to manage licensing functions, making the potential attack surface particularly dangerous. Attackers can leverage this vulnerability to install backdoors, modify system files, steal sensitive data, or establish persistent access to the network infrastructure. The vulnerability is particularly concerning because it affects a license management service that is often deployed in enterprise environments where such services are frequently exposed to external networks. This creates an ideal attack vector for lateral movement within corporate networks and can serve as a foothold for more extensive attacks. The vulnerability also aligns with ATT&CK technique T1059.007 for Command and Scripting Interpreter, as the exploitation enables attackers to execute arbitrary commands on the target system.
Mitigation strategies for CVE-2015-6946 should encompass both immediate remediation and long-term architectural improvements. The primary recommendation involves applying the vendor-provided security patches or updates that address the buffer overflow condition in the Reprise License Manager service. Organizations should also implement network segmentation to isolate the license management service from general network access, reducing the attack surface. Access controls should be enforced to limit who can interact with the service, and network monitoring should be enhanced to detect anomalous traffic patterns that might indicate exploitation attempts. Additionally, the vulnerability highlights the importance of secure coding practices and regular security testing, particularly for network services that handle external input. Implementing input validation, bounds checking, and memory safety mechanisms can prevent similar issues from occurring in the future. The incident also underscores the need for maintaining up-to-date vulnerability assessments and ensuring that legacy software components receive proper security attention. Organizations should consider replacing or migrating away from vulnerable software components that cannot be adequately patched, as the risk of exploitation remains high for unpatched systems. This vulnerability serves as a reminder of the critical importance of maintaining software security hygiene and the potential consequences of failing to address known security flaws in enterprise software infrastructure.