CVE-2017-11103
published 2017-07-13CVE-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…
PriorityP348high8.1CVSS 3.1
AVNACHPRNUINSUCHIHAH
EPSS
5.12%
91.4th percentile
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.
Affected
22 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apple | ios | — | — |
| apple | iphone_os | < 11.0 | 11.0 |
| apple | mac_os_x | < 10.13.1 | 10.13.1 |
| apple | macos_high_sierra | — | — |
| apple | macos_high_sierra_10.13.1_security_update_2017-001_sierra_and_security_update_20 | — | — |
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | heimdal | < heimdal 7.4.0.dfsg.1-1 (bookworm) | heimdal 7.4.0.dfsg.1-1 (bookworm) |
| debian | samba | < heimdal 7.4.0.dfsg.1-1 (bookworm) | heimdal 7.4.0.dfsg.1-1 (bookworm) |
| heimdal_project | heimdal | < 7.4.0 | 7.4.0 |
| heimdal_project | heimdal | >= 0 < 7.4.0.dfsg.1-1 | 7.4.0.dfsg.1-1 |
| heimdal_project | heimdal | >= 0 < 7.4.0.dfsg.1-1 | 7.4.0.dfsg.1-1 |
| heimdal_project | heimdal | >= 0 < 7.4.0.dfsg.1-1 | 7.4.0.dfsg.1-1 |
| heimdal_project | heimdal | >= 0 < 7.4.0.dfsg.1-1 | 7.4.0.dfsg.1-1 |
| samba | samba | >= 0 < 2:4.6.5+dfsg-4 | 2:4.6.5+dfsg-4 |
| samba | samba | >= 0 < 2:4.6.5+dfsg-4 | 2:4.6.5+dfsg-4 |
| samba | samba | >= 0 < 2:4.6.5+dfsg-4 | 2:4.6.5+dfsg-4 |
| samba | samba | >= 0 < 2:4.6.5+dfsg-4 | 2:4.6.5+dfsg-4 |
| samba | samba | >= 4.0.0 < 4.4.15 | 4.4.15 |
| samba | samba | >= 4.5.0 < 4.5.12 | 4.5.12 |
| samba | samba | >= 4.6.0 < 4.6.6 | 4.6.6 |
CVSS provenance
nvdv3.18.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv2.06.8MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P
osv8.1HIGH
vendor_debian8.1HIGH
vendor_redhat8.1HIGH
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Apple
CVE-2017-11103: macOS High Sierra 10.13.1, Security Update 2017-001 Sierra, and Security Update 2017-004 El Capitan
vendor_apple·2017-10-31·CVSS 8.1
CVE-2017-11103 [HIGH] CVE-2017-11103: macOS High Sierra 10.13.1, Security Update 2017-001 Sierra, and Security Update 2017-004 El Capitan
Apple Security Update: About the security content of macOS High Sierra 10.13.1, Security Update 2017-001 Sierra, and Security Update 2017-004 El Capitan
Product: macOS High Sierra 10.13.1, Security Update 2017-001 Sierra, and Security Update 2017-004 El Capitan
CVE: CVE-2017-11103
Component: Heimdal
Impact: An attacker in a privileged network position may be able to impersonate a service
Description: A validation issue existed in the handling of the KDC-REP service name. This issue was addressed with improved validation.
Apple
CVE-2017-11103: macOS High Sierra 10.13
vendor_apple·2017-09-25·CVSS 8.1
CVE-2017-11103 [HIGH] CVE-2017-11103: macOS High Sierra 10.13
Apple Security Update: About the security content of macOS High Sierra 10.13
Product: macOS High Sierra
Version: 10.13
CVE: CVE-2017-11103
Component: Heimdal
Impact: An attacker in a privileged network position may be able to impersonate a service
Description: A validation issue existed in the handling of the KDC-REP service name. This issue was addressed through improved validation.
Apple
CVE-2017-11103: iOS 11
vendor_apple·2017-09-19·CVSS 8.1
CVE-2017-11103 [HIGH] CVE-2017-11103: iOS 11
Apple Security Update: About the security content of iOS 11
Product: iOS
Version: 11
CVE: CVE-2017-11103
Component: Heimdal
Impact: An attacker in a privileged network position may be able to impersonate a service
Description: A validation issue existed in the handling of the KDC-REP service name. This issue was addressed through improved validation.
Ubuntu
Heimdal vulnerability
vendor_ubuntu·2017-07-24
CVE-2017-11103 Heimdal vulnerability
Title: Heimdal vulnerability
Summary: Heimdal could allow unintended access to network services.
USN-3353-1 fixed a vulnerability in Heimdal. This update provides
the corresponding updade for Ubuntu 12.04 ESM.
Original advisory details:
Jeffrey Altman, Viktor Dukhovni, and Nicolas Williams discovered
that Heimdal clients incorrectly trusted unauthenticated portions
of Kerberos tickets. A remote attacker could use this to impersonate
trusted network services or perform other attacks.
Instructions: After a standard system update you need to restart any applications
using Heimdal libraries to make all the necessary changes.
Ubuntu
Samba vulnerability
vendor_ubuntu·2017-07-24
CVE-2017-11103 Samba vulnerability
Title: Samba vulnerability
Summary: Samba could allow unintended access to network services.
USN-3353-1 fixed a vulnerability in Heimdal. This update provides the corresponding update for Samba.
Original advisory details:
Jeffrey Altman, Viktor Dukhovni, and Nicolas Williams discovered
that Samba clients incorrectly trusted unauthenticated portions
of Kerberos tickets. A remote attacker could use this to impersonate
trusted network services or perform other attacks.
Instructions: In general, a standard system update will make all the necessary changes.
Ubuntu
Samba vulnerability
vendor_ubuntu·2017-07-14
CVE-2017-11103 Samba vulnerability
Title: Samba vulnerability
Summary: Samba could allow unintended access to network services.
USN-3353-1 fixed a vulnerability in Heimdal. This update provides
the corresponding update for Samba.
Jeffrey Altman, Viktor Dukhovni, and Nicolas Williams discovered
that Samba clients incorrectly trusted unauthenticated portions of
Kerberos tickets. A remote attacker could use this to impersonate
trusted network servers or perform other attacks.
Instructions: In general, a standard system update will make all the necessary changes.
Ubuntu
Heimdal vulnerability
vendor_ubuntu·2017-07-14
CVE-2017-11103 Heimdal vulnerability
Title: Heimdal vulnerability
Summary: Heimdal could allow unintended access to network services.
Jeffrey Altman, Viktor Dukhovni, and Nicolas Williams discovered
that Heimdal clients incorrectly trusted unauthenticated portions
of Kerberos tickets. A remote attacker could use this to impersonate
trusted network services or perform other attacks.
Instructions: After a standard system update you need to restart any applications
using Heimdal libraries to make all the necessary changes.
BSD
FreeBSD-SA-17:05.heimdal: heimdal KDC-REP service name validation vulnerability
bsd_advisories·2017-07-12·CVSS 8.1
CVE-2017-11103 [HIGH] FreeBSD-SA-17:05.heimdal: heimdal KDC-REP service name validation vulnerability
FreeBSD-SA-17:05.heimdal Security Advisory
The FreeBSD Project
Topic: heimdal KDC-REP service name validation vulnerability
Category: contrib
Module: heimdal
Announced: 2017-07-12
Affects: All supported versions of FreeBSD.
Corrected: 2017-07-12 07:26:07 UTC (stable/11, 11.1-PRERELEASE)
2017-07-12 08:07:16 UTC (releng/11.1, 11.1-RC2-p1)
2017-07-12 08:07:16 UTC (releng/11.1, 11.1-RC1-p1)
2017-07-12 07:26:07 UTC (stable/11, 11.1-BETA3-p1)
2017-07-12 08:07:36 UTC (releng/11.0, 11.0-RELEASE-p11)
2017-07-12 07:26:07 UTC (stable/10, 10.3-STABLE)
2017-07-12 15:16:01 UTC (releng/10.3, 10.3-RELEASE-p20)
CVE Name: CVE-2017-11103
For general information regarding FreeBSD Security Advisories,
including descriptions of the fields above, security branches, and the
following sections, please visit .
Red Hat
krb5: Metadata taken from the unauthenticated plaintext
vendor_redhat·2017-07-11·CVSS 8.1
CVE-2017-11103 [HIGH] CWE-319 krb5: Metadata taken from the unauthenticated plaintext
krb5: Metadata taken from the unauthenticated plaintext
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.
Statement: This issue does not affect the version of MIT Kerberos impleme
Debian
CVE-2017-11103: heimdal - Heimdal before 7.4 allows remote attackers to impersonate services with Orpheus'...
vendor_debian·2017·CVSS 8.1
CVE-2017-11103 [HIGH] CVE-2017-11103: heimdal - Heimdal before 7.4 allows remote attackers to impersonate services with Orpheus'...
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.
Scope: local
bookworm: resolved (fixed in 7.4.0.dfsg.1-1)
bullseye: resolved (fixed in 7.4.0.dfsg.1-1)
forky: resolved (fixed in 7.
GHSA
GHSA-7cm4-q9wm-9w5g: Heimdal before 7
ghsa_unreviewed·2022-05-13
CVE-2017-11103 [HIGH] CWE-345 GHSA-7cm4-q9wm-9w5g: Heimdal before 7
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.
OSV
CVE-2017-11103: Heimdal before 7
osv·2017-07-13·CVSS 8.1
CVE-2017-11103 [HIGH] CVE-2017-11103: Heimdal before 7
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.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2017-11103 heimdal: krb5: Metadata taken from the unauthenticated plaintext [fedora-all]
bugzilla·2017-07-12·CVSS 8.1
CVE-2017-11103 [HIGH] CVE-2017-11103 heimdal: krb5: Metadata taken from the unauthenticated plaintext [fedora-all]
CVE-2017-11103 heimdal: krb5: Metadata taken from the unauthenticated plaintext [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple sup
Bugzilla
CVE-2017-11103 krb5: Metadata taken from the unauthenticated plaintext
bugzilla·2017-07-12·CVSS 8.1
CVE-2017-11103 [HIGH] CVE-2017-11103 krb5: Metadata taken from the unauthenticated plaintext
CVE-2017-11103 krb5: Metadata taken from the unauthenticated plaintext
A vulnerability was found in several independently developed implementations of Kerberos which caused that metadata were taken from the unauthenticated plaintext (the Ticket) rather than the authenticated and encrypted KDC response.
Proposed patch:
https://github.com/heimdal/heimdal/commit/6dd3eb836bbb80a00ffced4ad57077a1cdf227ea
Discussion:
External References:
https://www.orpheus-lyre.info/
---
Statement:
This issue does not affect the version of MIT Kerberos implementation as shipped with Red Hat Enterprise Linux. This issue also does not affect the version of Samba as shipped with Red Hat Enterprise Linux.
---
Created heimdal tracking bugs for this issue:
Affects: fedora-all [bug 1469998]
http://www.debian.org/security/2017/dsa-3912http://www.h5l.org/advisories.html?show=2017-07-11http://www.securityfocus.com/bid/99551http://www.securitytracker.com/id/1038876http://www.securitytracker.com/id/1039427https://github.com/heimdal/heimdal/releases/tag/heimdal-7.4.0https://support.apple.com/HT208112https://support.apple.com/HT208144https://support.apple.com/HT208221https://www.freebsd.org/security/advisories/FreeBSD-SA-17:05.heimdal.aschttps://www.orpheus-lyre.info/https://www.samba.org/samba/security/CVE-2017-11103.htmlhttp://www.debian.org/security/2017/dsa-3912http://www.h5l.org/advisories.html?show=2017-07-11http://www.securityfocus.com/bid/99551http://www.securitytracker.com/id/1038876http://www.securitytracker.com/id/1039427https://github.com/heimdal/heimdal/releases/tag/heimdal-7.4.0https://support.apple.com/HT208112https://support.apple.com/HT208144https://support.apple.com/HT208221https://www.freebsd.org/security/advisories/FreeBSD-SA-17:05.heimdal.aschttps://www.orpheus-lyre.info/https://www.samba.org/samba/security/CVE-2017-11103.html
2017-07-13
Published