CVE-2018-5709

Priority
Description
An issue was discovered in MIT Kerberos 5 (aka krb5) through 1.16. There is
a variable "dbentry->n_key_data" in kadmin/dbutil/dump.c that can store
16-bit data but unknowingly the developer has assigned a "u4" variable to
it, which is for 32-bit data. An attacker can use this vulnerability to
affect other artifacts of the database as we know that a Kerberos database
dump file contains trusted data.
Notes
 ebarretto> according to debian security tracker: non-issue, codepath is
 ebarretto> only run on trusted input, potential integer overflow is
 ebarretto> non-issue
Package
Source: krb5 (LP Ubuntu Debian)
Upstream:needs-triage
Ubuntu 12.04 ESM (Precise Pangolin):needs-triage
Ubuntu 14.04 LTS (Trusty Tahr):needs-triage
Ubuntu 16.04 LTS (Xenial Xerus):needs-triage
Ubuntu 18.04 LTS (Bionic Beaver):needs-triage
Ubuntu 18.10 (Cosmic Cuttlefish):needs-triage
Ubuntu 19.04 (Disco Dingo):needs-triage
More Information

Updated: 2019-01-14 21:32:51 UTC (commit 51f9b73af244ba86b9321e46e526586c25a8e060)