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.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: mitre
Published: 2017-07-13T13:00:00
Updated: 2024-08-05T17:57:57.836Z
Reserved: 2017-07-07T00:00:00
Link: CVE-2017-11103
Vulnrichment
No data.
NVD
Status : Modified
Published: 2017-07-13T13:29:00.173
Modified: 2024-11-21T03:07:06.110
Link: CVE-2017-11103
Redhat