{ "id": "CVE-2018-1000159", "sourceIdentifier": "cve@mitre.org", "published": "2018-04-18T19:29:00.333", "lastModified": "2024-11-21T03:39:49.093", "vulnStatus": "Modified", "cveTags": [], "descriptions": [ { "lang": "en", "value": "tlslite-ng version 0.7.3 and earlier, since commit d7b288316bca7bcdd082e6ccff5491e241305233 contains a CWE-354: Improper Validation of Integrity Check Value vulnerability in TLS implementation, tlslite/utils/constanttime.py: ct_check_cbc_mac_and_pad(); line \"end_pos = data_len - 1 - mac.digest_size\" that can result in an attacker manipulating the TLS ciphertext which will not be detected by receiving tlslite-ng. This attack appears to be exploitable via man in the middle on a network connection. This vulnerability appears to have been fixed after commit 3674815d1b0f7484454995e2737a352e0a6a93d8." }, { "lang": "es", "value": "tlslite-ng, en versiones 0.7.3 y anteriores, desde el commit con ID d7b288316bca7bcdd082e6ccff5491e241305233, contiene un CWE-354: vulnerabilidad de validaci\u00f3n incorrecta del valor de comprobaci\u00f3n de integridad en la implementaci\u00f3n TLS, tlslite/utils/constanttime.py: ct_check_cbc_mac_and_pad(); en la l\u00ednea \"end_pos = data_len - 1 - mac.digest_size\" que puede resultar en que un atacante manipule el texto cifrado TLS, que no ser\u00e1 detectado por recibir tlslite-ng. El ataque parece ser explotable mediante un Man-in-the-Middle (MitM) en una conexi\u00f3n de red. La vulnerabilidad parece haber sido solucionada tras el commit con ID 3674815d1b0f7484454995e2737a352e0a6a93d8." } ], "metrics": { "cvssMetricV30": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.0", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N", "baseScore": 5.9, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "NONE" }, "exploitabilityScore": 2.2, "impactScore": 3.6 } ], "cvssMetricV2": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "2.0", "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "baseScore": 4.3, "accessVector": "NETWORK", "accessComplexity": "MEDIUM", "authentication": "NONE", "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "availabilityImpact": "NONE" }, "baseSeverity": "MEDIUM", "exploitabilityScore": 8.6, "impactScore": 2.9, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false } ] }, "weaknesses": [ { "source": "nvd@nist.gov", "type": "Primary", "description": [ { "lang": "en", "value": "CWE-354" } ] } ], "configurations": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:tlslite-ng_project:tlslite-ng:*:*:*:*:*:*:*:*", "versionEndIncluding": "0.7.3", "matchCriteriaId": "5E9B247E-CE69-4AB6-BCAB-98A2CD5154FA" } ] } ] } ], "references": [ { "url": "https://github.com/tomato42/tlslite-ng/pull/234", "source": "cve@mitre.org", "tags": [ "Third Party Advisory" ] }, { "url": "https://github.com/tomato42/tlslite-ng/pull/234", "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Third Party Advisory" ] } ] }