National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-11103 Detail

Current 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. 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.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 8.1 HIGH
Vector:  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.debian.org/security/2017/dsa-3912 Third Party Advisory
http://www.h5l.org/advisories.html?show=2017-07-11 Broken Link
http://www.securityfocus.com/bid/99551 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1038876 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1039427 Third Party Advisory VDB Entry
https://github.com/heimdal/heimdal/releases/tag/heimdal-7.4.0 Release Notes
https://support.apple.com/HT208112 Third Party Advisory
https://support.apple.com/HT208144 Third Party Advisory
https://support.apple.com/HT208221 Third Party Advisory
https://www.freebsd.org/security/advisories/FreeBSD-SA-17:05.heimdal.asc Third Party Advisory
https://www.orpheus-lyre.info/ Third Party Advisory
https://www.samba.org/samba/security/CVE-2017-11103.html Third Party Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-345 Insufficient Verification of Data Authenticity NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:heimdal_project:heimdal:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
7.4.0

Configuration 2 ( hide )
 cpe:2.3:o:freebsd:freebsd:-:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 3 ( hide )
 cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
4.0.0
Up to (excluding)
4.4.15
 cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
4.5.0
Up to (excluding)
4.5.12
 cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
4.6.0
Up to (excluding)
4.6.6

Configuration 4 ( hide )
 cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
11.0
 cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
10.13.1

Configuration 5 ( hide )
 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:debian:debian_linux:10:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

7 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-11103
NVD Published Date:
07/13/2017
NVD Last Modified:
11/07/2019