CVE-2017-14648 in BladeEnc
Summary
by MITRE
A global buffer overflow was discovered in the iteration_loop function in loop.c in BladeEnc version 0.94.2. The vulnerability causes an out-of-bounds write, which leads to remote denial of service or possibly code execution.
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Analysis
by VulDB Data Team • 11/18/2019
The vulnerability identified as CVE-2017-14648 represents a critical buffer overflow condition within the BladeEnc media processing software version 0.94.2. This flaw exists within the iteration_loop function located in the loop.c source file, demonstrating a classic example of improper input validation and memory management. The software's failure to properly bounds-check array accesses during iterative processing creates a scenario where maliciously crafted input data can trigger memory corruption. The vulnerability manifests as a global buffer overflow, indicating that the flaw affects memory locations beyond the intended buffer boundaries, potentially compromising the application's memory space and overall system stability.
The technical exploitation of this vulnerability occurs through an out-of-bounds write condition that can be triggered remotely when the affected software processes specially crafted input files. When the iteration_loop function encounters malformed data during its processing cycle, it fails to validate the input parameters before writing to memory locations that exceed the allocated buffer size. This condition creates opportunities for attackers to manipulate the program flow and potentially execute arbitrary code on the target system. The vulnerability's classification as remote in nature means that attackers do not require local access to the system, making it particularly dangerous for network-facing applications and services that utilize BladeEnc for media processing tasks.
From an operational impact perspective, this vulnerability presents significant risks to organizations that rely on BladeEnc for video encoding and processing operations. The potential for remote denial of service means that attackers can disrupt legitimate services by causing the application to crash or become unresponsive, leading to operational downtime and service interruption. More critically, the possibility of code execution creates scenarios where attackers could gain unauthorized control over affected systems, potentially leading to data breaches, privilege escalation, or further lateral movement within network environments. The vulnerability affects systems where BladeEnc is deployed for automated processing, particularly in content delivery networks, media servers, or any infrastructure handling user-uploaded media files.
The remediation approach for this vulnerability requires immediate patching of the affected BladeEnc version 0.94.2 to address the buffer overflow condition through proper bounds checking and input validation. Organizations should implement comprehensive input sanitization measures and conduct thorough code reviews to identify similar patterns that might exist in other functions within the codebase. Network segmentation and access controls should be enforced to limit exposure of vulnerable systems to untrusted input sources. Additionally, implementing intrusion detection systems and monitoring for unusual processing patterns can help detect exploitation attempts. This vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions, and relates to ATT&CK technique T1059 for command and scripting interpreter usage. Organizations should also consider implementing application whitelisting controls and regular security assessments to prevent similar vulnerabilities from emerging in other software components. The incident underscores the importance of maintaining up-to-date software versions and conducting regular vulnerability assessments to protect against remote exploitation vectors.