CVE-2017-3893 in QNX Software Development Platform
Summary
by MITRE
In BlackBerry QNX Software Development Platform (SDP) 6.6.0, the default configuration of the QNX SDP system did not in all circumstances prevent attackers from modifying the GOT or PLT tables with buffer overflow attacks.
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Analysis
by VulDB Data Team • 07/22/2025
The vulnerability identified as CVE-2017-3893 affects the BlackBerry QNX Software Development Platform version 6.6.0, representing a critical weakness in memory protection mechanisms that could enable sophisticated exploitation techniques. This issue specifically targets the Global Offset Table and Procedure Linkage Table which are fundamental components of dynamic linking in Unix-like systems. The flaw exists within the default system configuration where proper safeguards against buffer overflow attacks are insufficient, creating potential attack vectors that could compromise system integrity and security posture.
The technical implementation of this vulnerability stems from inadequate memory protection controls during runtime execution, particularly when handling dynamic library loading and function resolution. The GOT and PLT tables serve as crucial elements for managing function calls between shared libraries and the main executable, making them prime targets for attackers seeking to manipulate program execution flow. When buffer overflow conditions occur, attackers can leverage these tables to redirect execution to malicious code, effectively bypassing standard security mechanisms. This weakness aligns with CWE-121, which describes stack-based buffer overflow conditions, and CWE-122, which covers heap-based buffer overflows that can lead to similar memory corruption scenarios.
The operational impact of CVE-2017-3893 extends beyond simple privilege escalation, as it enables attackers to potentially gain complete control over affected systems. Systems running QNX SDP 6.6.0 with default configurations become vulnerable to persistent threats that can manipulate critical system functions through carefully crafted buffer overflow exploits. The attack surface is particularly concerning in environments where QNX systems are deployed for embedded applications, automotive systems, or industrial control networks where system integrity is paramount. This vulnerability could facilitate the execution of arbitrary code, data manipulation, and potential denial of service conditions that could compromise safety-critical operations.
Mitigation strategies for this vulnerability should focus on implementing comprehensive memory protection mechanisms including stack canaries, address space layout randomization, and proper input validation procedures. System administrators should immediately update to patched versions of QNX SDP, as BlackBerry released security updates addressing this specific weakness. Additional protective measures include disabling unnecessary dynamic linking features, implementing strict code review processes for buffer handling, and deploying runtime monitoring solutions that can detect anomalous memory access patterns. The remediation approach should align with ATT&CK technique T1055 which covers process injection methods, as attackers may leverage similar techniques to exploit the vulnerable GOT/PLT manipulation capabilities. Organizations should also consider implementing network segmentation and access controls to limit potential attack vectors and reduce the overall risk exposure associated with this memory corruption vulnerability.