fkie_cve-2017-11103
Vulnerability from fkie_nvd
Published
2017-07-13 13:29
Modified
2025-04-20 01:37
Severity ?
Summary
Heimdal before 7.4 allows remote attackers to impersonate services with Orpheus' Lyre attacks because it obtains service-principal names in a way that violates the Kerberos 5 protocol specification. In _krb5_extract_ticket() the KDC-REP service name must be obtained from the encrypted version stored in 'enc_part' instead of the unencrypted version stored in 'ticket'. Use of the unencrypted version provides an opportunity for successful server impersonation and other attacks. NOTE: this CVE is only for Heimdal and other products that embed Heimdal code; it does not apply to other instances in which this part of the Kerberos 5 protocol specification is violated.
References
Impacted products
Vendor | Product | Version | |
---|---|---|---|
heimdal_project | heimdal | * | |
freebsd | freebsd | - | |
samba | samba | * | |
samba | samba | * | |
samba | samba | * | |
apple | iphone_os | * | |
apple | mac_os_x | * | |
debian | debian_linux | 8.0 | |
debian | debian_linux | 9.0 | |
debian | debian_linux | 10.0 |
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In _krb5_extract_ticket() the KDC-REP service name must be obtained from the encrypted version stored in \u0027enc_part\u0027 instead of the unencrypted version stored in \u0027ticket\u0027. Use of the unencrypted version provides an opportunity for successful server impersonation and other attacks. NOTE: this CVE is only for Heimdal and other products that embed Heimdal code; it does not apply to other instances in which this part of the Kerberos 5 protocol specification is violated." }, { "lang": "es", "value": "Heimdal en versiones anteriores a la 7.4 permite que atacantes remotos suplanten servicios con ataques Orpheus\u0027 Lyre ya que obtiene nombres de servicios principales, de manera que viola la especificaci\u00f3n del protocolo Kerberos 5. En _krb5_extract_ticket() el nombre del servicio KDC-REP se debe obtener de la versi\u00f3n cifrada almacenada en \u0027enc_part\u0027 en lugar de la versi\u00f3n sin cifrar almacenada en \u0027ticket\u0027. El uso de versiones sin cifrar supone una oportunidad para que se lleve a cabo una suplantaci\u00f3n del servidor exitosa adem\u00e1s de otros ataques. NOTA: este CVE solo es aplicable a Heimdal y otros productos que embeben c\u00f3digo Heimdal." } ], "id": "CVE-2017-11103", "lastModified": "2025-04-20T01:37:25.860", "metrics": { "cvssMetricV2": [ { "acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": { "accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 6.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0" }, "exploitabilityScore": 8.6, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false } ], "cvssMetricV31": [ { "cvssData": { "attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, "exploitabilityScore": 2.2, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary" } ] }, "published": "2017-07-13T13:29:00.173", "references": [ { "source": "cve@mitre.org", "tags": [ "Third Party Advisory" ], "url": "http://www.debian.org/security/2017/dsa-3912" }, { "source": "cve@mitre.org", "tags": [ "Broken Link" ], "url": "http://www.h5l.org/advisories.html?show=2017-07-11" }, { "source": "cve@mitre.org", "tags": [ "Third Party Advisory", "VDB Entry" ], "url": "http://www.securityfocus.com/bid/99551" }, { "source": "cve@mitre.org", "tags": [ "Third Party Advisory", "VDB Entry" ], "url": "http://www.securitytracker.com/id/1038876" }, { "source": "cve@mitre.org", "tags": [ "Third Party Advisory", "VDB Entry" ], "url": "http://www.securitytracker.com/id/1039427" }, { "source": "cve@mitre.org", "tags": [ "Release Notes" ], "url": "https://github.com/heimdal/heimdal/releases/tag/heimdal-7.4.0" }, { "source": "cve@mitre.org", "tags": [ "Third Party Advisory" ], "url": "https://support.apple.com/HT208112" }, { "source": "cve@mitre.org", "tags": [ "Third Party Advisory" ], "url": "https://support.apple.com/HT208144" }, { "source": "cve@mitre.org", "tags": [ "Third Party Advisory" ], "url": "https://support.apple.com/HT208221" }, { "source": "cve@mitre.org", "tags": [ "Third Party Advisory" ], "url": "https://www.freebsd.org/security/advisories/FreeBSD-SA-17:05.heimdal.asc" }, { "source": "cve@mitre.org", "tags": [ "Third Party Advisory" ], "url": "https://www.orpheus-lyre.info/" }, { "source": "cve@mitre.org", "tags": [ "Third Party Advisory" ], "url": "https://www.samba.org/samba/security/CVE-2017-11103.html" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Third Party Advisory" ], "url": "http://www.debian.org/security/2017/dsa-3912" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Broken Link" ], "url": "http://www.h5l.org/advisories.html?show=2017-07-11" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Third Party Advisory", "VDB Entry" ], "url": "http://www.securityfocus.com/bid/99551" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Third Party Advisory", "VDB Entry" ], "url": "http://www.securitytracker.com/id/1038876" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Third Party Advisory", "VDB Entry" ], "url": "http://www.securitytracker.com/id/1039427" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Release Notes" ], "url": "https://github.com/heimdal/heimdal/releases/tag/heimdal-7.4.0" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Third Party Advisory" ], "url": "https://support.apple.com/HT208112" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Third Party Advisory" ], "url": "https://support.apple.com/HT208144" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Third Party Advisory" ], "url": "https://support.apple.com/HT208221" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Third Party Advisory" ], "url": "https://www.freebsd.org/security/advisories/FreeBSD-SA-17:05.heimdal.asc" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Third Party Advisory" ], "url": "https://www.orpheus-lyre.info/" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Third Party Advisory" ], "url": "https://www.samba.org/samba/security/CVE-2017-11103.html" } ], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Deferred", "weaknesses": [ { "description": [ { "lang": "en", "value": "CWE-345" } ], "source": "nvd@nist.gov", "type": "Primary" } ] }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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