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CVE-2017-11103
DEB
High

Heimdal before 7.4 allows remote attackers to impersonate services with Orpheus' Lyre attacks because it obtains service-principal names in…

CVSS
8.1
High
EPSS
0.05
p91
Published
2017-01-01
Updated
2017-01-01
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.

Tags · CWE
Pre-auth
CWE-319
CWE-345
CAPEC-65
CAPEC-102
CAPEC-111
CAPEC-117
CAPEC-141
CAPEC-142
CAPEC-148
CAPEC-218
CAPEC-383
CAPEC-384
CAPEC-385
CAPEC-386
CAPEC-387
CAPEC-388
CAPEC-477
CAPEC-665
CAPEC-701
Affected products
Debian_linux
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Timeline
2017-01-01
Published
2017-01-01
Updated
CVSS 3.1 breakdown
Attack Vector
AV: N
Network (N)
Attack Complexity
AC: H
High (H)
Privileges Required
PR: N
None (N)
User Interaction
UI: N
None (N)
Scope
S: U
Unchanged (U)
Confidentiality Impact
C: H
High (H)
Integrity Impact
I: H
High (H)
Availability Impact
A: H
High (H)
Exploit indicators
EPSS
0.051 · p91
Known exploited (KEV)
No
MITRE ATT&CK
Inferred via CAPEC
└ via CAPEC-65 · CWE-319
└ via CAPEC-383 · CWE-319
└ via CAPEC-665 · CWE-345
└ via CAPEC-148 · CWE-345
└ via CAPEC-665 · CWE-345
└ via CAPEC-665 · CWE-345
└ via CAPEC-141 · CWE-345
└ via CAPEC-142 · CWE-345
Known exploits — Сканер-ВС
No Сканер-ВС checks registered for this vulnerability yet.
Affected products
ProductVendorStatus
heimdalTracked
heimdalTracked
heimdalTracked
heimdalTracked
heimdalTracked
sambaTracked
sambaTracked
sambaTracked
sambaTracked
sambaTracked
sambaTracked
samba4Tracked
samba4Tracked
debian_linux*Tracked
freebsd*Tracked
heimdal*Tracked
iphone_os*Tracked
mac_os_x*Tracked
samba*Tracked
Source databases
DEB
CVE
UBU
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