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SUSE: CVE-2017-17439: SUSE Linux Security Advisory

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SUSE: CVE-2017-17439: SUSE Linux Security Advisory

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
12/06/2017
Created
07/25/2018
Added
12/12/2017
Modified
01/26/2018

Description

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.

Solution(s)

  • suse-upgrade-libheimdal
  • suse-upgrade-libheimdal-debuginfo
  • suse-upgrade-libheimdal-debugsource
  • suse-upgrade-libheimdal-devel

References

  • DSA-4055
  • CVE-2017-17439

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