CVE - CVE-2017-11103

CVE-ID
CVE-2017-11103	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://www.orpheus-lyre.info/ CONFIRM:http://www.h5l.org/advisories.html?show=2017-07-11 CONFIRM:https://github.com/heimdal/heimdal/releases/tag/heimdal-7.4.0 CONFIRM:https://www.samba.org/samba/security/CVE-2017-11103.html CONFIRM:https://support.apple.com/HT208112 CONFIRM:https://support.apple.com/HT208144 CONFIRM:https://support.apple.com/HT208221 DEBIAN:DSA-3912 URL:http://www.debian.org/security/2017/dsa-3912 FREEBSD:FreeBSD-SA-17:05 URL:https://www.freebsd.org/security/advisories/FreeBSD-SA-17:05.heimdal.asc BID:99551 URL:http://www.securityfocus.com/bid/99551 SECTRACK:1038876 URL:http://www.securitytracker.com/id/1038876 SECTRACK:1039427 URL:http://www.securitytracker.com/id/1039427
Assigning CNA
MITRE Corporation
Date Entry Created
20170707	Disclaimer: The entry creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20170707)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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