CVE-2025-36083

// CVE-2025-36083 PoC - Heap Memory Information Disclosure // Target: IBM Concert Software 1.0.0 - 2.0.0 // Type: Local privilege escalation via improper heap memory clearing #include <stdio.h> #include <stdlib.h> #include <string.h> #include <stdint.h> /* * PoC demonstrates the concept of heap memory not being cleared before release. * In real attack scenario, this would involve: * 1. Attaching debugger to IBM Concert Software process * 2. Triggering the vulnerable code path that allocates sensitive buffers * 3. Freeing the buffer without proper clearing * 4. Using heap inspection techniques to read residual data */ void simulate_vulnerable_buffer_allocation() { printf("[*] Simulating vulnerable heap buffer allocation in IBM Concert Software\n"); // Allocate buffer for sensitive data (simulating internal buffer) char *sensitive_buffer = (char *)malloc(256); if (sensitive_buffer == NULL) { printf("[-] Memory allocation failed\n"); return; } // Copy sensitive data into buffer (simulating credential storage) const char *fake_credentials = "user:admin|password:S3cr3tP@ssw0rd|token:ABC123"; memcpy(sensitive_buffer, fake_credentials, strlen(fake_credentials) + 1); printf("[+] Sensitive data stored in heap buffer at %p\n", (void *)sensitive_buffer); printf("[+] Buffer content: %s\n", sensitive_buffer); // VULNERABILITY: Buffer freed WITHOUT clearing (no memset/safe_free) printf("[*] Freeing buffer WITHOUT proper memory clearing (VULNERABLE)\n"); free(sensitive_buffer); // After free, memory content still exists in heap (use-after-free scenario) printf("[!] Buffer freed but data may still be accessible in heap\n"); printf("[*] Attacker can now inspect heap memory to recover sensitive data\n"); } void demonstrate_secure_allocation() { printf("\n[*] Demonstrating SECURE buffer handling\n"); char *secure_buffer = (char *)malloc(256); if (secure_buffer == NULL) { printf("[-] Memory allocation failed\n"); return; } const char *data = "sensitive:data"; memcpy(secure_buffer, data, strlen(data) + 1); printf("[+] Data stored in secure buffer\n"); // SECURE: Clear buffer before freeing printf("[+] Clearing buffer with memset before free (SECURE)\n"); memset(secure_buffer, 0, 256); free(secure_buffer); printf("[+] Buffer securely cleared and freed\n"); } int main() { printf("========================================\n"); printf("CVE-2025-36083 PoC - Educational Purpose\n"); printf("IBM Concert Software Heap Memory Disclosure\n"); printf("========================================\n\n"); simulate_vulnerable_buffer_allocation(); demonstrate_secure_allocation(); printf("\n[*] Note: Real exploitation requires:\n"); printf(" - Local access to target system\n"); printf(" - Ability to attach debugger or use heap inspection tools\n"); printf(" - Triggering specific code paths in IBM Concert Software\n"); return 0; }

{"cve": {"id": "CVE-2025-36083", "sourceIdentifier": "[email protected]", "published": "2025-10-28T15:16:12.427", "lastModified": "2025-10-31T18:59:03.043", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "IBM Concert Software \n\n1.0.0 through 2.0.0 could allow a local user to obtain sensitive information from buffers due to improper clearing of heap memory before release."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 6.2, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.5, "impactScore": 3.6}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-244"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:ibm:concert:*:*:*:*:*:*:*:*", "versionStartIncluding": "1.0.0", "versionEndExcluding": "2.1.0", "matchCriteriaId": "43072AC2-05A5-41A3-9E79-E0AF2C5AD3FF"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*", "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1"}]}]}], "references": [{"url": "https://www.ibm.com/support/pages/node/7249356", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}