Bug 1015556 – VUL-0: CVE-2016-7030: freeipa: DoS attack against kerberized services by abusing password policy

Bug 1015556 - (CVE-2016-7030) VUL-0: CVE-2016-7030: freeipa: DoS attack against kerberized services by abusing password policy

(CVE-2016-7030)
Summary:	VUL-0: CVE-2016-7030: freeipa: DoS attack against kerberized services by abus...

Status:	RESOLVED INVALID

Classification:	openSUSE
Product:	openSUSE Distribution
Classification:	openSUSE
Component:	Other
Version:	13.2
Hardware:	Other Other

Priority:	P3 - Medium Severity: Normal (vote)
Target Milestone:	---
Assigned To:	Howard Guo
QA Contact:	E-mail List

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Reported:	2016-12-14 14:44 UTC by Marcus Meissner
Modified:	2016-12-25 02:07 UTC (History)
CC List:	1 user (show)

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Found By:	Security Response Team
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Description Marcus Meissner 2016-12-14 14:44:31 UTC

rh#1370493

A flaw was found that allows any unauthenticated party to easily run DoS attack against kerberized services in FreeIPA/IdM realm.

FreeIPA contains MIT KDC as its main component + FreeIPA is using custom database driver for the KDC. As a side-effect of implementation, FreeIPA is enforcing password policies for all principals, including services which do not use "password" but keytab with randomly-generated/strong key.

Default password policy locks an account after 5 unsuccessful authentication attempts for 10 minutes. An attacker can use this to simply lock-out any principal, including system services.

References:
https://bugzilla.redhat.com/show_bug.cgi?id=1370493
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-7030

Comment 1 Marcus Meissner 2016-12-14 14:49:47 UTC

not on anz distro

Comment 2 Swamp Workflow Management 2016-12-14 23:03:17 UTC

bugbot adjusting priority

Comment 3 Howard Guo 2016-12-25 02:07:40 UTC

Merry Christmas!

FreeIPA isn't currently distributed on Tumbleweed, and most probably won't be for a little while longer.