Total vulnerabilities in the database
In Heimdal through 7.4, 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.
| Software | From | Fixed in |
|---|---|---|
| debian / debian_linux | 9.0 | 9.0.x |
| heimdal_project / heimdal | - | 7.4.0.x |