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. (CVE-2017-11103)
Impact
There is no impact; F5 products are not affected by this vulnerability.

fedora 2

nessus 17

debiancve 1

openvas 22

ubuntu 4

redhatcve 1

osv 5

veracode 1

altlinux 5

cloudfoundry 1

prion 1

debian 4