CVE-2020-26896

{"id": "CVE-2020-26896", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.8, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 4.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.2, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 4.2, "exploitabilityScore": 3.9}]}, "published": "2020-10-21T02:15:12.737", "references": [{"url": "https://gist.github.com/ariard/6bdeb995565d1cc292753e1ee4ae402d", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://lists.linuxfoundation.org/pipermail/lightning-dev/2020-October/002855.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://lists.linuxfoundation.org/pipermail/lightning-dev/2020-October/002857.html", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-354"}]}], "descriptions": [{"lang": "en", "value": "Prior to 0.11.0-beta, LND (Lightning Network Daemon) had a vulnerability in its invoice database. While claiming on-chain a received HTLC output, it didn't verify that the corresponding outgoing off-chain HTLC was already settled before releasing the preimage. In the case of a hash-and-amount collision with an invoice, the preimage for an expected payment was instead released. A malicious peer could have deliberately intercepted an HTLC intended for the victim node, probed the preimage through a colluding relayed HTLC, and stolen the intercepted HTLC. The impact is a loss of funds in certain situations, and a weakening of the victim's receiver privacy."}, {"lang": "es", "value": "Antes de la versi\u00f3n 0.11.0-beta, LND (Lightning Network Daemon) ten\u00eda una vulnerabilidad en su base de datos de facturas. Mientras reclamaba en cadena una salida HTLC recibida, no verificaba que la correspondiente salida HTLC fuera de cadena ya estaba resuelta antes de liberar la preimagen. En el caso de una colisi\u00f3n de hach\u00eds con una factura, la imagen previa para un pago esperado fue liberada. Un par malintencionado podr\u00eda haber interceptado deliberadamente un HTLC destinado al nodo v\u00edctima, sondeado la imagen previa a trav\u00e9s de un HTLC retransmitido y robado el HTLC interceptado. El impacto es una p\u00e9rdida de fondos en ciertas situaciones, y un debilitamiento de la privacidad del receptor de la v\u00edctima"}], "lastModified": "2020-11-05T15:43:36.313", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:lightning_network_daemon_project:lightning_network_daemon:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BB979325-5104-42AC-88E7-86340DEAABB6", "versionEndExcluding": "0.11.0"}, {"criteria": "cpe:2.3:a:lightning_network_daemon_project:lightning_network_daemon:0.11.0:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "471DB911-D351-4192-BB35-22F05EF59336"}, {"criteria": "cpe:2.3:a:lightning_network_daemon_project:lightning_network_daemon:0.11.0:beta_rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C3D61839-7705-455E-8B4B-09EA2D546FDA"}, {"criteria": "cpe:2.3:a:lightning_network_daemon_project:lightning_network_daemon:0.11.0:beta_rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "32789438-5E6E-4B67-B61D-41FD65DF97C7"}, {"criteria": "cpe:2.3:a:lightning_network_daemon_project:lightning_network_daemon:0.11.0:beta_rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CFD3719E-B0B0-4F54-8C05-B4F1DD0ED060"}, {"criteria": "cpe:2.3:a:lightning_network_daemon_project:lightning_network_daemon:0.11.0:beta_rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "ACA6F2D1-385C-49AA-B1FF-FD406501E0F4"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}