Vulnerability Name:

CCN-12720

Published:2003-07-24
Updated:2003-07-24
Summary:MIT Kerberos has an incorrect implementation of the ETYPE-INFO2 preauthentication type, which can result in a failure to obtain Kerberos tickets. If a response is sent to a vulnerable Kerberos client that has the ETYPE-INFO2 type containing the optional "salt" element, from a Key Distribution Center (KDC) that has an ETYPE-INFO2 implementation that adheres to the latest Kerberos protocol specification, the vulnerable client will reject the response.
CVSS v3 Severity:5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Consequences:Denial of Service
References:Source: CCN
Type: MIT Kerberos Known Bugs Web site
serious protocol interop bug in krb5-1.3

Source: CCN
Type: MIT Kerberos Web site
Kerberos: The Network Authentication Protocol

Source: XF
Type: UNKNOWN
kerberos-incorrect-etype-info2(12720)

Vulnerable Configuration:Configuration CCN 1:
  • cpe:/a:mit:kerberos_5:1.3:-:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    mit kerberos 5-1.3