Arbitrary Code Execution and Denial of Service Vulnerability in MIT Kerberos 5

CVE-2012-1015 · HIGH Severity

AV:N/AC:M/AU:N/C:C/I:C/A:C

The kdc_handle_protected_negotiation function in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8.x, 1.9.x before 1.9.5, and 1.10.x before 1.10.3 attempts to calculate a checksum before verifying that the key type is appropriate for a checksum, which allows remote attackers to execute arbitrary code or cause a denial of service (uninitialized pointer free, heap memory corruption, and daemon crash) via a crafted AS-REQ request.

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