| Package | Affected versions | Patched versions |
|---|---|---|
| heimdal | < 7.4.0 | 7.4.0 |
| samba | ≥ 4.0.0, < 4.4.15≥ 4.5.0, < 4.5.12≥ 4.6.0, < 4.6.6 | 4.4.154.5.124.6.6 |
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.
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