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cvelistMitreCVELIST:CVE-2017-17439
HistoryDec 06, 2017 - 3:00 p.m.

CVE-2017-17439

2017-12-0615:00:00
mitre
www.cve.org

7.3 High

AI Score

Confidence

High

0.66 Medium

EPSS

Percentile

97.9%

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.

7.3 High

AI Score

Confidence

High

0.66 Medium

EPSS

Percentile

97.9%