{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-114611", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-10-21T20:34:25.599Z", "datePublished": "2026-10-22T17:33:13.611Z", "dateUpdated": "2026-10-22T17:33:13.611Z"}, "containers": {"cna": {"title": "OCO-Server: MDM /profile endpoint accepts self-signed PKCS#7 signatures (PKCS7_NOVERIFY): device MDM identity (certificate + private key) disclosure and device-record hijack", "problemTypes": [{"descriptions": [{"cweId": "CWE-295", "lang": "en", "description": "CWE-295: Improper Certificate Validation", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/schorschii/OCO-Server/security/advisories/GHSA-p549-5h7r-7639", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/schorschii/OCO-Server/security/advisories/GHSA-p549-5h7r-7639"}, {"name": "https://github.com/schorschii/OCO-Server/commit/5cab5ad2461434816d706b7be9cc08bda15c1404", "tags": ["x_refsource_MISC"], "url": "https://github.com/schorschii/OCO-Server/commit/5cab5ad2461434816d706b7be9cc08bda15c1404"}, {"name": "https://github.com/schorschii/OCO-Server/commit/f3a6591136f9bd92aff39ddfb26587e6dfdb64df", "tags": ["x_refsource_MISC"], "url": "https://github.com/schorschii/OCO-Server/commit/f3a6591136f9bd92aff39ddfb26587e6dfdb64df"}], "affected": [{"vendor": "schorschii", "product": "OCO-Server", "versions": [{"version": "< 1.2.3", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-22T17:33:13.611Z"}, "descriptions": [{"lang": "en", "value": "OCO-Server is a self-hosted endpoint management application for computer inventory, software deployment, and mobile device management. Prior to 1.2.3,the Apple MDM enrollment endpoint `frontend/api-mdm.php` verifies the signed enrollment-request plist with `openssl_pkcs7_verify(..., PKCS7_NOVERIFY, ...)`. `PKCS7_NOVERIFY` disables signer certificate chain and trust validation, so the signature only has to be self-consistent with whatever certificate is embedded in the PKCS#7 blob. A self-signed certificate from an unrelated attacker is accepted. Because the endpoint trusts the `SERIAL` field taken from the unverified payload, anyone who knows a registered device's serial number can sign a forged plist (`SERIAL` = victim device, attacker-chosen `UDID`) with an arbitrary self-signed certificate; POST it unauthenticated to `/api-mdm.php/profile` (Content-Type: `application/pkcs7-signature`); and receive the victim device's freshly minted MDM identity: a certificate with `CN=<serial>` issued by the server's internal MDM device CA, bundled with its private key in a PKCS#12 payload inside the returned `.mobileconfig` enrollment profile. Additionally, the victim's `mobile_device` database row is silently overwritten with the attacker-supplied `UDID` (device-record hijack). With the stolen certificate and key, the attacker can impersonate the victim device on all subsequent MDM traffic (`/checkin`, `/mdm`, `/parameters`), which authenticate callers by the certificate CN (the serial number) via `checkSignature()` in the same file. This yields control over the victim device's MDM relationship: reading its management data, replacing its push token, and disrupting or redirecting its enrollment. Version 1.2.3 fixes the issue."}], "source": {"advisory": "GHSA-p549-5h7r-7639", "discovery": "UNKNOWN"}}}}

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{}