{"dataType": "CVE_RECORD", "dataVersion": "5.0", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2019-11841", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2023-06-16T00:00:00", "dateReserved": "2019-05-09T00:00:00", "datePublished": "2019-05-22T00:00:00"}, "containers": {"cna": {"providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2023-06-16T00:00:00"}, "descriptions": [{"lang": "en", "value": "A message-forgery issue was discovered in crypto/openpgp/clearsign/clearsign.go in supplementary Go cryptography libraries 2019-03-25. According to the OpenPGP Message Format specification in RFC 4880 chapter 7, a cleartext signed message can contain one or more optional \"Hash\" Armor Headers. The \"Hash\" Armor Header specifies the message digest algorithm(s) used for the signature. However, the Go clearsign package ignores the value of this header, which allows an attacker to spoof it. Consequently, an attacker can lead a victim to believe the signature was generated using a different message digest algorithm than what was actually used. Moreover, since the library skips Armor Header parsing in general, an attacker can not only embed arbitrary Armor Headers, but also prepend arbitrary text to cleartext messages without invalidating the signatures."}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "affected"}]}], "references": [{"url": "https://sec-consult.com/"}, {"url": "https://go.googlesource.com/crypto/"}, {"url": "http://packetstormsecurity.com/files/152840/Go-Cryptography-Libraries-Cleartext-Message-Spoofing.html"}, {"url": "https://sec-consult.com/en/blog/advisories/cleartext-message-spoofing-in-go-cryptography-libraries-cve-2019-11841/"}, {"name": "[debian-lts-announce] 20190913 [SECURITY] [DLA 1920-1] golang-go.crypto security update", "tags": ["mailing-list"], "url": "https://lists.debian.org/debian-lts-announce/2019/09/msg00011.html"}, {"name": "[debian-lts-announce] 20201007 [SECURITY] [DLA 2402-1] golang-go.crypto security update", "tags": ["mailing-list"], "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00014.html"}, {"name": "[debian-lts-announce] 20230616 [SECURITY] [DLA 3455-1] golang-go.crypto security update", "tags": ["mailing-list"], "url": "https://lists.debian.org/debian-lts-announce/2023/06/msg00017.html"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "n/a"}]}]}}}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:golang:crypto:2019-03-25:*:*:*:*:*:*:*", "matchCriteriaId": "49465506-825E-4B0B-808D-7BB4ED8FE005", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*", "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43", "vulnerable": true}, {"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "A message-forgery issue was discovered in crypto/openpgp/clearsign/clearsign.go in supplementary Go cryptography libraries 2019-03-25. According to the OpenPGP Message Format specification in RFC 4880 chapter 7, a cleartext signed message can contain one or more optional \"Hash\" Armor Headers. The \"Hash\" Armor Header specifies the message digest algorithm(s) used for the signature. However, the Go clearsign package ignores the value of this header, which allows an attacker to spoof it. Consequently, an attacker can lead a victim to believe the signature was generated using a different message digest algorithm than what was actually used. Moreover, since the library skips Armor Header parsing in general, an attacker can not only embed arbitrary Armor Headers, but also prepend arbitrary text to cleartext messages without invalidating the signatures."}, {"lang": "es", "value": "Se descubri\u00f3 un problema de falsificaci\u00f3n de mensaje en Crypto/OpenPGP/ClearSign/ClearSign. en las librer\u00edas de criptograf\u00eda complementario 25-03-2019. De acuerdo con la especificaci\u00f3n de formato de mensaje OpenPGP en RFC 4880 cap\u00edtulo 7, un mensaje con signo de texto no cifrado puede contener uno o m\u00e1s opcional \"hash \" encabezados de la estructura. Los encabezados de la estructura \"hash \" especifica los algoritmos de Resumen de mensaje utilizados para la firma. No obstante, el paquete go ClearSign ignora el valor de este encabezado, lo que permite a un atacante sumarlo. Por lo tanto, un atacante puede llevar a una v\u00edctima a creer que la firma se gener\u00f3 utilizando un algoritmo de Resumen de mensaje diferente de lo que se us\u00f3 realmente. Adem\u00e1s, dado que la librer\u00eda omite el an\u00e1lisis del encabezado de la estructura en general, un atacante no solo puede incrustar encabezados de estructura arbitrarios, sino tambi\u00e9n anteponer texto arbitrario a mensajes sin invalidar las firmas."}], "id": "CVE-2019-11841", "lastModified": "2023-06-17T00:15:09.527", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 4.3, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2019-05-22T17:29:00.287", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "url": "http://packetstormsecurity.com/files/152840/Go-Cryptography-Libraries-Cleartext-Message-Spoofing.html"}, {"source": "cve@mitre.org", "tags": ["Product", "Third Party Advisory"], "url": "https://go.googlesource.com/crypto/"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2019/09/msg00011.html"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00014.html"}, {"source": "cve@mitre.org", "url": "https://lists.debian.org/debian-lts-announce/2023/06/msg00017.html"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://sec-consult.com/"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://sec-consult.com/en/blog/advisories/cleartext-message-spoofing-in-go-cryptography-libraries-cve-2019-11841/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-347"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}