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.
History

No history.

cve-icon 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

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2017-07-13T13:29:00.173

Modified: 2020-08-18T15:05:49.313

Link: CVE-2017-11103

cve-icon Redhat

Severity : Important

Publid Date: 2017-07-11T00:00:00Z

Links: CVE-2017-11103 - Bugzilla