ubuntu-cve-2017-11103
Vulnerability from osv_ubuntu
Published
2017-07-13 00:00
Modified
2026-04-22 07:38
Summary
Details

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.

Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "heimdal-clients",
            "binary_version": "1.6~git20131207+dfsg-1ubuntu1.2"
          },
          {
            "binary_name": "heimdal-clients-x",
            "binary_version": "1.6~git20131207+dfsg-1ubuntu1.2"
          },
          {
            "binary_name": "heimdal-docs",
            "binary_version": "1.6~git20131207+dfsg-1ubuntu1.2"
          },
          {
            "binary_name": "heimdal-kcm",
            "binary_version": "1.6~git20131207+dfsg-1ubuntu1.2"
          },
          {
            "binary_name": "heimdal-kdc",
            "binary_version": "1.6~git20131207+dfsg-1ubuntu1.2"
          },
          {
            "binary_name": "heimdal-multidev",
            "binary_version": "1.6~git20131207+dfsg-1ubuntu1.2"
          },
          {
            "binary_name": "heimdal-servers",
            "binary_version": "1.6~git20131207+dfsg-1ubuntu1.2"
          },
          {
            "binary_name": "heimdal-servers-x",
            "binary_version": "1.6~git20131207+dfsg-1ubuntu1.2"
          },
          {
            "binary_name": "libasn1-8-heimdal",
            "binary_version": "1.6~git20131207+dfsg-1ubuntu1.2"
          },
          {
            "binary_name": "libgssapi3-heimdal",
            "binary_version": "1.6~git20131207+dfsg-1ubuntu1.2"
          },
          {
            "binary_name": "libhcrypto4-heimdal",
            "binary_version": "1.6~git20131207+dfsg-1ubuntu1.2"
          },
          {
            "binary_name": "libhdb9-heimdal",
            "binary_version": "1.6~git20131207+dfsg-1ubuntu1.2"
          },
          {
            "binary_name": "libheimbase1-heimdal",
            "binary_version": "1.6~git20131207+dfsg-1ubuntu1.2"
          },
          {
            "binary_name": "libheimntlm0-heimdal",
            "binary_version": "1.6~git20131207+dfsg-1ubuntu1.2"
          },
          {
            "binary_name": "libhx509-5-heimdal",
            "binary_version": "1.6~git20131207+dfsg-1ubuntu1.2"
          },
          {
            "binary_name": "libkadm5clnt7-heimdal",
            "binary_version": "1.6~git20131207+dfsg-1ubuntu1.2"
          },
          {
            "binary_name": "libkadm5srv8-heimdal",
            "binary_version": "1.6~git20131207+dfsg-1ubuntu1.2"
          },
          {
            "binary_name": "libkafs0-heimdal",
            "binary_version": "1.6~git20131207+dfsg-1ubuntu1.2"
          },
          {
            "binary_name": "libkdc2-heimdal",
            "binary_version": "1.6~git20131207+dfsg-1ubuntu1.2"
          },
          {
            "binary_name": "libkrb5-26-heimdal",
            "binary_version": "1.6~git20131207+dfsg-1ubuntu1.2"
          },
          {
            "binary_name": "libotp0-heimdal",
            "binary_version": "1.6~git20131207+dfsg-1ubuntu1.2"
          },
          {
            "binary_name": "libroken18-heimdal",
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          },
          {
            "binary_name": "libsl0-heimdal",
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      "package": {
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      },
      "ranges": [
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
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            "binary_name": "libsmbclient",
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          {
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          {
            "binary_name": "python-samba",
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          {
            "binary_name": "registry-tools",
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          },
          {
            "binary_name": "samba",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.10"
          },
          {
            "binary_name": "samba-common",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.10"
          },
          {
            "binary_name": "samba-common-bin",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.10"
          },
          {
            "binary_name": "samba-dsdb-modules",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.10"
          },
          {
            "binary_name": "samba-libs",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.10"
          },
          {
            "binary_name": "samba-testsuite",
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          },
          {
            "binary_name": "samba-vfs-modules",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.10"
          },
          {
            "binary_name": "smbclient",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.10"
          },
          {
            "binary_name": "winbind",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.10"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "samba",
        "purl": "pkg:deb/ubuntu/samba@2:4.3.11+dfsg-0ubuntu0.14.04.10?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:4.3.11+dfsg-0ubuntu0.14.04.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
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        "2:4.0.10+dfsg-4ubuntu2",
        "2:4.0.13+dfsg-1ubuntu1",
        "2:4.1.3+dfsg-2ubuntu2",
        "2:4.1.3+dfsg-2ubuntu3",
        "2:4.1.3+dfsg-2ubuntu4",
        "2:4.1.3+dfsg-2ubuntu5",
        "2:4.1.6+dfsg-1ubuntu1",
        "2:4.1.6+dfsg-1ubuntu2",
        "2:4.1.6+dfsg-1ubuntu2.14.04.1",
        "2:4.1.6+dfsg-1ubuntu2.14.04.2",
        "2:4.1.6+dfsg-1ubuntu2.14.04.3",
        "2:4.1.6+dfsg-1ubuntu2.14.04.4",
        "2:4.1.6+dfsg-1ubuntu2.14.04.5",
        "2:4.1.6+dfsg-1ubuntu2.14.04.7",
        "2:4.1.6+dfsg-1ubuntu2.14.04.8",
        "2:4.1.6+dfsg-1ubuntu2.14.04.9",
        "2:4.1.6+dfsg-1ubuntu2.14.04.11",
        "2:4.1.6+dfsg-1ubuntu2.14.04.12",
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        "2:4.3.8+dfsg-0ubuntu0.14.04.2",
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      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "heimdal-clients",
            "binary_version": "1.7~git20150920+dfsg-4ubuntu1.16.04.1"
          },
          {
            "binary_name": "heimdal-docs",
            "binary_version": "1.7~git20150920+dfsg-4ubuntu1.16.04.1"
          },
          {
            "binary_name": "heimdal-kcm",
            "binary_version": "1.7~git20150920+dfsg-4ubuntu1.16.04.1"
          },
          {
            "binary_name": "heimdal-kdc",
            "binary_version": "1.7~git20150920+dfsg-4ubuntu1.16.04.1"
          },
          {
            "binary_name": "heimdal-multidev",
            "binary_version": "1.7~git20150920+dfsg-4ubuntu1.16.04.1"
          },
          {
            "binary_name": "heimdal-servers",
            "binary_version": "1.7~git20150920+dfsg-4ubuntu1.16.04.1"
          },
          {
            "binary_name": "libasn1-8-heimdal",
            "binary_version": "1.7~git20150920+dfsg-4ubuntu1.16.04.1"
          },
          {
            "binary_name": "libgssapi3-heimdal",
            "binary_version": "1.7~git20150920+dfsg-4ubuntu1.16.04.1"
          },
          {
            "binary_name": "libhcrypto4-heimdal",
            "binary_version": "1.7~git20150920+dfsg-4ubuntu1.16.04.1"
          },
          {
            "binary_name": "libhdb9-heimdal",
            "binary_version": "1.7~git20150920+dfsg-4ubuntu1.16.04.1"
          },
          {
            "binary_name": "libheimbase1-heimdal",
            "binary_version": "1.7~git20150920+dfsg-4ubuntu1.16.04.1"
          },
          {
            "binary_name": "libheimntlm0-heimdal",
            "binary_version": "1.7~git20150920+dfsg-4ubuntu1.16.04.1"
          },
          {
            "binary_name": "libhx509-5-heimdal",
            "binary_version": "1.7~git20150920+dfsg-4ubuntu1.16.04.1"
          },
          {
            "binary_name": "libkadm5clnt7-heimdal",
            "binary_version": "1.7~git20150920+dfsg-4ubuntu1.16.04.1"
          },
          {
            "binary_name": "libkadm5srv8-heimdal",
            "binary_version": "1.7~git20150920+dfsg-4ubuntu1.16.04.1"
          },
          {
            "binary_name": "libkafs0-heimdal",
            "binary_version": "1.7~git20150920+dfsg-4ubuntu1.16.04.1"
          },
          {
            "binary_name": "libkdc2-heimdal",
            "binary_version": "1.7~git20150920+dfsg-4ubuntu1.16.04.1"
          },
          {
            "binary_name": "libkrb5-26-heimdal",
            "binary_version": "1.7~git20150920+dfsg-4ubuntu1.16.04.1"
          },
          {
            "binary_name": "libotp0-heimdal",
            "binary_version": "1.7~git20150920+dfsg-4ubuntu1.16.04.1"
          },
          {
            "binary_name": "libroken18-heimdal",
            "binary_version": "1.7~git20150920+dfsg-4ubuntu1.16.04.1"
          },
          {
            "binary_name": "libsl0-heimdal",
            "binary_version": "1.7~git20150920+dfsg-4ubuntu1.16.04.1"
          },
          {
            "binary_name": "libwind0-heimdal",
            "binary_version": "1.7~git20150920+dfsg-4ubuntu1.16.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "heimdal",
        "purl": "pkg:deb/ubuntu/heimdal@1.7~git20150920+dfsg-4ubuntu1.16.04.1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.7~git20150920+dfsg-4ubuntu1.16.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.6~rc2+dfsg-10ubuntu1",
        "1.7~git20150920+dfsg-4ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ctdb",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.9"
          },
          {
            "binary_name": "libnss-winbind",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.9"
          },
          {
            "binary_name": "libpam-winbind",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.9"
          },
          {
            "binary_name": "libparse-pidl-perl",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.9"
          },
          {
            "binary_name": "libsmbclient",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.9"
          },
          {
            "binary_name": "libwbclient0",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.9"
          },
          {
            "binary_name": "python-samba",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.9"
          },
          {
            "binary_name": "registry-tools",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.9"
          },
          {
            "binary_name": "samba",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.9"
          },
          {
            "binary_name": "samba-common",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.9"
          },
          {
            "binary_name": "samba-common-bin",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.9"
          },
          {
            "binary_name": "samba-dsdb-modules",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.9"
          },
          {
            "binary_name": "samba-libs",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.9"
          },
          {
            "binary_name": "samba-testsuite",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.9"
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          {
            "binary_name": "samba-vfs-modules",
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          },
          {
            "binary_name": "smbclient",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.9"
          },
          {
            "binary_name": "winbind",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.9"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "samba",
        "purl": "pkg:deb/ubuntu/samba@2:4.3.11+dfsg-0ubuntu0.16.04.9?arch=source\u0026distro=xenial"
      },
      "ranges": [
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            {
              "fixed": "2:4.3.11+dfsg-0ubuntu0.16.04.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:4.1.17+dfsg-4ubuntu2",
        "2:4.1.20+dfsg-1ubuntu1",
        "2:4.1.20+dfsg-1ubuntu2",
        "2:4.1.20+dfsg-1ubuntu3",
        "2:4.1.20+dfsg-1ubuntu5",
        "2:4.3.3+dfsg-1ubuntu1",
        "2:4.3.3+dfsg-1ubuntu2",
        "2:4.3.3+dfsg-1ubuntu3",
        "2:4.3.6+dfsg-1ubuntu1",
        "2:4.3.8+dfsg-0ubuntu1",
        "2:4.3.9+dfsg-0ubuntu0.16.04.1",
        "2:4.3.9+dfsg-0ubuntu0.16.04.2",
        "2:4.3.9+dfsg-0ubuntu0.16.04.3",
        "2:4.3.11+dfsg-0ubuntu0.16.04.1",
        "2:4.3.11+dfsg-0ubuntu0.16.04.3",
        "2:4.3.11+dfsg-0ubuntu0.16.04.5",
        "2:4.3.11+dfsg-0ubuntu0.16.04.6",
        "2:4.3.11+dfsg-0ubuntu0.16.04.7",
        "2:4.3.11+dfsg-0ubuntu0.16.04.8"
      ]
    }
  ],
  "aliases": [],
  "details": "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.",
  "id": "UBUNTU-CVE-2017-11103",
  "modified": "2026-04-22T07:38:18Z",
  "published": "2017-07-13T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2017-11103"
    },
    {
      "type": "REPORT",
      "url": "https://orpheus-lyre.info/"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/heimdal/heimdal/commit/6dd3eb836bbb80a00ffced4ad57077a1cdf227ea"
    },
    {
      "type": "REPORT",
      "url": "https://www.samba.org/samba/security/CVE-2017-11103.html"
    },
    {
      "type": "REPORT",
      "url": "http://www.h5l.org/advisories.html?show=2017-07-11"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/heimdal/heimdal/releases/tag/heimdal-7.4.0"
    },
    {
      "type": "REPORT",
      "url": "https://www.freebsd.org/security/advisories/FreeBSD-SA-17:05.heimdal.asc"
    },
    {
      "type": "REPORT",
      "url": "https://www.orpheus-lyre.info/"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3353-2"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3353-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3353-3"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3353-4"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2017-11103"
    }
  ],
  "related": [
    "USN-3353-2",
    "USN-3353-1",
    "USN-3353-3",
    "USN-3353-4"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2017-11103"
  ]
}



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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.