Detect Apple Multiple Products Use-After-Free Vulnerability (CVE-2023-43000) in Sumo Logic CSE
Detects exploitation of CVE-2023-43000, a use-after-free vulnerability (CWE-416) affecting multiple Apple products. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild. Use-after-free conditions in Apple system components can allow attackers to execute arbitrary code, escalate privileges, or achieve kernel-level compromise on affected macOS, iOS, and related platforms.
MITRE ATT&CK
- Tactic
- Privilege Escalation Execution
Sumo Detection Query
_sourceCategory=endpoint/macos OR _sourceCategory=crowdstrike/events
| where os_family matches /(?i)mac[oO][sS]/ OR os_family matches /(?i)(iOS|iPadOS)/
| where process_name matches /(?i)(ReportCrash|CrashReporter|osanalyticshelper|sysdiagnose)/
OR event_type matches /(?i)(crash|use.after.free|memory.corruption|sigsegv|sigbus)/
| timeslice 5m
| count by _timeslice, host, user, process_name, event_type
| join (
_sourceCategory=network
| where dest_port in ("4444","1337","8080","8443")
| where !isNull(dest_ip)
| count by host, dest_ip, dest_port
) on host
| where _count > 0
| fields _timeslice, host, user, process_name, event_type, dest_ip, dest_port
| sort by _timeslice descSumo Logic query correlating macOS endpoint crash events with suspicious outbound network connections to detect exploitation of CVE-2023-43000.
Data Sources
Required Tables
False Positives & Tuning
- Apple crash reporting processes sending legitimate diagnostics to apple.com endpoints
- Enterprise security tools triggering crash handlers during real-time protection activities
- macOS software updates causing temporary process instability with outbound update traffic
- SIEM collector agents on macOS generating crash-adjacent events during log shipping
Other platforms for CVE-2023-43000
Testing Methodology
Validate this detection against 3 adversary techniques from Atomic Red Team. Each test below lists the behaviour to exercise and the telemetry you should expect to see. Executable commands and cleanup steps are available with Pro.
- Test 1Simulate macOS Use-After-Free Crash with C2-like Network Beacon
Expected signal: Process crash event for python3, EXC_BAD_ACCESS in crash logs, outbound TCP connection to LAB_C2_HOST:4444 from the same host within 10 seconds of crash
- Test 2Invoke CrashReporter from Non-Standard Parent Process
Expected signal: ProcessRollup2 event for ReportCrash with parent_process=bash; crash report file creation in DiagnosticReports directory
- Test 3Mass Crash Generation and External Reachback Simulation
Expected signal: 5 crash report files created in DiagnosticReports, 5 outbound HTTP connections to LAB_C2_HOST:4444 over ~5 seconds
Unlock Pro Content
Get the full detection package for CVE-2023-43000 including response playbook, investigation guide, and atomic red team tests.