SERVER-OTHER -- Snort has detected traffic exploiting vulnerabilities in a server in the network.
SERVER-OTHER MIT Kerberos 5 krb5_read_message ksh protocol bad sendauth version length denial of service attempt
This event is generated when a malformed message triggers a denial of service in krb5_read_message for MIT Kerberos 5. Impact: Attempted Denial of Service Details: Ease of Attack:
No public information
No known false positives
Cisco Talos Intelligence Group
Tactic:
Technique:
For reference, see the MITRE ATT&CK vulnerability types here: https://attack.mitre.org
CVE-2014-5355MIT Kerberos 5 (aka krb5) through 1.13.1 incorrectly expects that a krb5_read_message data field is represented as a string ending with a '\0' character, which allows remote attackers to (1) cause a denial of service (NULL pointer dereference) via a zero-byte version string or (2) cause a denial of service (out-of-bounds read) by omitting the '\0' character, related to appl/user_user/server.c and lib/krb5/krb/recvauth.c. |
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