CVE-2018-4301 in Smart Card Services
Summary
by MITRE • 01/08/2025
This issue is fixed in SCSSU-201801. A potential stack based buffer overflow existed in GemaltoKeyHandle.cpp.
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Analysis
by VulDB Data Team • 07/29/2025
The vulnerability identified as CVE-2018-4301 represents a critical stack-based buffer overflow condition that was discovered within the GemaltoKeyHandle.cpp source code file. This flaw emerged in the context of cryptographic hardware security modules where proper input validation and memory management are paramount for maintaining system integrity. The issue was specifically addressed in the SCSSU-201801 security update, indicating that it affected a widely used cryptographic key management component. The buffer overflow vulnerability stems from inadequate bounds checking during the processing of user-supplied data, creating an exploitable condition that could allow attackers to overwrite adjacent memory locations on the stack.
The technical implementation of this vulnerability involves a classic stack buffer overflow scenario where insufficient input validation permits data to exceed the allocated buffer boundaries within the GemaltoKeyHandle.cpp file. When malicious input is processed by the cryptographic key handling functions, the excessive data can overwrite return addresses, function pointers, and other critical stack variables. This type of vulnerability maps directly to CWE-121 Stack-based Buffer Overflow, which is classified as a high-risk weakness in the Common Weakness Enumeration catalog. The flaw demonstrates poor memory management practices and inadequate parameter validation that are common precursors to remote code execution exploits.
The operational impact of CVE-2018-4301 extends beyond simple memory corruption, as it provides potential attackers with pathways to achieve arbitrary code execution within the cryptographic environment. Systems utilizing affected Gemalto key management components could be vulnerable to privilege escalation attacks, where an attacker might gain unauthorized access to sensitive cryptographic keys or compromise the entire security infrastructure. The vulnerability's presence in cryptographic hardware creates a particularly dangerous scenario since attackers could potentially undermine the fundamental security guarantees that these modules are designed to provide. This weakness aligns with ATT&CK technique T1059.007 for Command and Scripting Interpreter and T1566 for Phishing, as attackers might leverage this vulnerability to establish persistent access or escalate privileges within secured environments.
Mitigation strategies for CVE-2018-4301 require immediate deployment of the SCSSU-201801 security update, which contains the necessary code modifications to address the buffer overflow condition. Organizations should also implement additional defensive measures including input validation controls, stack canaries, and address space layout randomization to reduce the exploitability of similar vulnerabilities. System administrators should conduct thorough inventory assessments to identify all affected devices and ensure proper patch management protocols are in place. The vulnerability highlights the critical importance of maintaining up-to-date cryptographic hardware and software components, as well as implementing comprehensive security monitoring to detect potential exploitation attempts. Regular security assessments and code reviews focusing on memory management practices should be conducted to prevent similar issues from emerging in other cryptographic implementations.