fkie_cve-2017-11103
Vulnerability from fkie_nvd
Published
2017-07-13 13:29
Modified
2025-04-20 01:37
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
cve@mitre.orghttp://www.debian.org/security/2017/dsa-3912Third Party Advisory
cve@mitre.orghttp://www.h5l.org/advisories.html?show=2017-07-11Broken Link
cve@mitre.orghttp://www.securityfocus.com/bid/99551Third Party Advisory, VDB Entry
cve@mitre.orghttp://www.securitytracker.com/id/1038876Third Party Advisory, VDB Entry
cve@mitre.orghttp://www.securitytracker.com/id/1039427Third Party Advisory, VDB Entry
cve@mitre.orghttps://github.com/heimdal/heimdal/releases/tag/heimdal-7.4.0Release Notes
cve@mitre.orghttps://support.apple.com/HT208112Third Party Advisory
cve@mitre.orghttps://support.apple.com/HT208144Third Party Advisory
cve@mitre.orghttps://support.apple.com/HT208221Third Party Advisory
cve@mitre.orghttps://www.freebsd.org/security/advisories/FreeBSD-SA-17:05.heimdal.ascThird Party Advisory
cve@mitre.orghttps://www.orpheus-lyre.info/Third Party Advisory
cve@mitre.orghttps://www.samba.org/samba/security/CVE-2017-11103.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2017/dsa-3912Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.h5l.org/advisories.html?show=2017-07-11Broken Link
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/99551Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1038876Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1039427Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://github.com/heimdal/heimdal/releases/tag/heimdal-7.4.0Release Notes
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/HT208112Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/HT208144Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/HT208221Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.freebsd.org/security/advisories/FreeBSD-SA-17:05.heimdal.ascThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.orpheus-lyre.info/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.samba.org/samba/security/CVE-2017-11103.htmlThird Party Advisory



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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Heimdal before 7.4 allows remote attackers to impersonate services with Orpheus\u0027 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 \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",
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}


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