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01 Record

CVE-2017-11103

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.

UnratedPUBLISHEDCNA: mitre
CNA base scoreUnratedNo CNA CVSS vector

02 Description

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.

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
5.11% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 92.1% of scored records. A rank, not a probability.
NVD base score
8.1 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2017-07-13 13:00Z9 YR AGO
Last updated
2024-08-05 17:57Z2 YR AGO
Reserved
2017-07-07
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-345Insufficient Verification of Data AuthenticityClass
  • CWE-319Cleartext Transmission of Sensitive InformationBase
Data version
5.1
Document digest
788c488add9ee9658494f07b1d4035b250a5aa16fc61c79c40ab7badc3fe4653

05 Affected products

VendorProductVersionsPlatforms
appleiphone_osNot specified—
applemac_os_xNot specified—
debiandebian_linuxNot specified—
freebsdfreebsdNot specified—
heimdal_projectheimdalNot specified—
redhatenterprise_linuxNot specified—
redhatjboss_enterprise_web_serverNot specified—
redhatstorageNot specified—
sambasambaNot specified—

06 References

07 Fixed in

Debian 12

  • heimdal
    Fixed in 7.4.0.dfsg.1-1
  • samba
    Fixed in 2:4.6.5+dfsg-4

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • heimdal
    Fixed in 7.4.0.dfsg.1-1
  • samba
    Fixed in 2:4.6.5+dfsg-4

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • heimdal
    Fixed in 7.4.0.dfsg.1-1
  • samba
    Fixed in 2:4.6.5+dfsg-4

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 14.04 LTS

  • heimdal
    Fixed in 1.6~git20131207+dfsg-1ubuntu1.2
  • samba
    Fixed in 2:4.3.11+dfsg-0ubuntu0.14.04.10

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • heimdal
    Fixed in 1.7~git20150920+dfsg-4ubuntu1.16.04.1
  • samba
    Fixed in 2:4.3.11+dfsg-0ubuntu0.16.04.9

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.