Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2017-11103

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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.058
EPSS Ranking 90.0%
CVSS Severity
CVSS v3 Score 8.1
CVSS v2 Score 6.8
References
Products affected by CVE-2017-11103


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