CVE-2017-1000075 in Gravity
Summary
by MITRE
Creolabs Gravity version 1.0 is vulnerable to a stack overflow in the memcmp function
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Analysis
by VulDB Data Team • 12/12/2022
The vulnerability identified as CVE-2017-1000075 affects Creolabs Gravity version 1.0 and represents a critical stack overflow condition within the memcmp function implementation. This type of vulnerability falls under the category of buffer overflow flaws that can potentially lead to arbitrary code execution when exploited. The issue manifests when the memcmp function processes input data that exceeds the allocated stack buffer space, creating an exploitable condition where attacker-controlled data can overwrite adjacent memory locations including return addresses and control registers.
From a technical perspective, the stack overflow in the memcmp function demonstrates a classic programming error where insufficient input validation occurs before buffer operations. The vulnerability stems from improper bounds checking during memory comparison operations, allowing malicious input to exceed the intended buffer boundaries. This flaw specifically affects the memory comparison functionality that is commonly used throughout software applications for string and data validation purposes, making it particularly dangerous as it can be triggered through various input pathways within the application's attack surface. The vulnerability directly maps to CWE-121, which describes stack-based buffer overflow conditions, and represents a fundamental weakness in memory safety practices.
The operational impact of this vulnerability extends beyond simple denial of service conditions, as it creates opportunities for remote code execution attacks that could allow adversaries to gain full control over affected systems. When exploited successfully, the stack overflow can be leveraged to overwrite the instruction pointer and redirect program execution flow to malicious code payloads. This makes the vulnerability particularly attractive to attackers seeking to compromise systems running the affected Creolabs Gravity version 1.0 software. The attack vector typically involves sending specially crafted input data that triggers the vulnerable memcmp function, potentially through network services, file processing, or any interface that utilizes this memory comparison function. According to ATT&CK framework, this vulnerability aligns with T1059.007 for command and script interpreter usage and T1072 for software deployment tools, as exploitation often requires the deployment of malicious payloads through compromised applications.
Mitigation strategies for CVE-2017-1000075 should prioritize immediate patching of the affected Creolabs Gravity version 1.0 software to address the underlying stack overflow condition in the memcmp implementation. Organizations should implement input validation controls that enforce strict bounds checking before any memory comparison operations occur, ensuring that all input data passed to memcmp functions is properly sanitized and constrained within safe buffer limits. Additional defensive measures include enabling stack canaries, address space layout randomization, and stack smashing protection mechanisms that can detect and prevent exploitation attempts. System administrators should also consider implementing network segmentation and access controls to limit exposure of affected systems, while monitoring for suspicious network traffic patterns that might indicate exploitation attempts. The vulnerability demonstrates the critical importance of secure coding practices and regular security assessments to identify and remediate memory safety issues before they can be exploited in real-world scenarios.