CVE-2017-17439

In Heimdal 7.1.0, remote unauthenticated attackers are able to crash the KDC by sending a crafted UDP packet containing empty data fields for client name or realm. The parser would unconditionally dereference NULL pointers in that case, leading to a segmentation fault. This is related to the _kdc_as_rep function in kdc/kerberos5.c and the der_length_visible_string function in lib/asn1/der_length.c.

No comments yet.

Leave a Reply

Please leave these two fields as-is:

Protected by Invisible Defender. Showed 403 to 896,632 bad guys.