CVE-2017-11103

mediumpriority · track · 34OT risk · elevatedEPSS 0.051 · 92 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

5.12% (92nd) EPSS

CVSS 6.8 · medium

Is it mine?

22 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

8.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–8.1

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 6.4

v3.18.1highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.2 · impact 5.9

v3.18.1highAV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.4highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-345USprimaryCWE-345US

affected products (22)

Products and version ranges known to be affected.

Apple macOS <10.13all versionscert_bundDE
Apple macOS< 10.13cert_bundDE
n/a n/a≤ n/aenisa_euvdEU
Apple Inc. OS X≤ 10.13.1fstec_bduRU
Apple Inc. iOS≤ 11.0fstec_bduRU
Samba Team Samba4.0.0 → 4.4.15fstec_bduRU
Samba Team Samba4.5.0 → 4.5.12fstec_bduRU
Samba Team Samba4.6.0 → 4.6.6fstec_bduRU
ООО «РусБИТех-Астра» Astra Linux Common Edition≤ 2.12 «Орёл»fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 10fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 9fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 8fstec_bduRU
apple iphone os< 11.0nvdUScpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple mac os x< 10.13.1nvdUScpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
debian debian linux= 10.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
debian debian linux= 8.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
debian debian linux= 9.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
freebsd freebsdall versionsnvdUScpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*
heimdal project heimdal< 7.4.0nvdUScpe:2.3:a:heimdal_project:heimdal:*:*:*:*:*:*:*:*
samba samba4.0.0 → 4.4.15nvdUScpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*

showing 20 of 22

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2025-0370Apple Mac OS: Mehrere SchwachstellenDeutsch2017-09-25csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstelle in Apple Mac OS ausnutzen, um Code mit Kernel Privilegien auszuführen, Sicherheitsvorkehrungen zu umgehen, einen Denial of Service Angriff durchzuführen oder vertrauliche Daten einzusehen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund nvd NVD CVE.org MITRE

published 2017-07-13modified 2026-06-17

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+1445 more

references (36)

External citations — patches, advisories, analysis.

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