In Heimdal up to and including 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.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
|---|---|---|
debian debian linux 9.0 |
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heimdal project heimdal |
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