CVE-2023-36028

What is this vulnerability?

CVE-2023-36028 is categorized as a critical Heap-based Buffer Overflow flaw with a CVSS base score of 9.8. Based on our vulnerability intelligence, this issue occurs when the application fails to securely handle untrusted data boundaries.

Microsoft Protected Extensible Authentication Protocol (PEAP) Remote Code Execution Vulnerability

This architectural defect enables adversaries to bypass intended security controls, directly manipulating the application's execution state or data layer. Immediate strategic intervention is required.

Risk Assessment

Impact on Systems

✅ Remote Code Execution: Attackers can overwrite the instruction pointer to redirect execution to malicious shellcode.

✅ Memory Corruption: Overwriting adjacent memory regions can corrupt critical application state, leading to privilege escalation.

✅ Denial of Service: Triggering segmentation faults results in immediate disruption of critical systems.

How to Fix and Mitigate CVE-2023-36028

1. Apply Vendor Patches: Upgrade affected components to their latest, non-vulnerable versions immediately.
2. Implement Input Validation: Ensure all user-supplied data is validated, sanitized, and type-checked before processing.
3. Deploy Runtime Protection: Use Precogs continuous monitoring to detect exploitation attempts in real time.
4. Audit Dependencies: Review and update all third-party libraries and transitive dependencies.

Defending with Precogs AI

Microsoft Protected Extensible Authentication Protocol (PEAP) contains a remote code execution vulnerability. Unauthenticated attackers within range of a wireless network send crafted PEAP packets to the authentication server, triggering memory corruption and executing arbitrary code. Precogs Binary SAST uncovers unsafe state machine transitions in network handshakes.

Use Precogs to continuously scan your codebase, binaries, APIs, and infrastructure for this vulnerability class and related attack patterns. Our AI-powered detection engine combines static analysis with threat intelligence to identify exploitable weaknesses before attackers do.

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Vulnerability Code Signature

Attack Data Flow

Vulnerable Code Pattern

// ❌ VULNERABLE: Heap-based Buffer Overflow
void process_data(char *input) {
    char *buffer = malloc(64);
    // Taint sink: copies without bounds checking
    strcpy(buffer, input);
}

Secure Code Pattern

// ✅ SECURE: Bounded copy
void process_data(char *input) {
    char *buffer = malloc(64);
    if (buffer != NULL) {
        // Sanitized boundary check
        strncpy(buffer, input, 63);
        buffer[63] = '\0';
    }
}

How Precogs Detects This

Precogs Binary SAST engine explicitly uncovers memory boundary violations and unsafe memory management functions in compiled binaries.\n