Bug 1793071 (CVE-2020-1722)

Summary:	CVE-2020-1722 ipa: No password length restriction leads to denial of service
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	abokovoy, fdc, frenaud, ipa-maint, jcholast, jhrozek, mkosek, pcech, pvoborni, rcritten, security-response-team, ssorce, tscherf, twoerner
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in IPA. When sending a very long password (>= 1,000,000 characters) to the server, the password hashing process could exhaust memory and CPU leading to a denial of service and the website becoming unresponsive. The highest threat from this vulnerability is to system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-09-29 21:59:32 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1802408, 1802409, 1823621
Bug Blocks:	1780457

Description Dhananjay Arunesh 2020-01-20 15:47:11 UTC

A vulnerability was found in IPA, where by sending a very long password (1.000.000 characters) it's possible to cause a denial a service attack on the server. This may lead to the website becoming unavailable or unresponsive. Usually, this problem is caused by a vulnerable password hashing implementation. When a long password is sent, the password hashing process will result in CPU and memory exhaustion.

Comment 14 Huzaifa S. Sidhpurwala 2020-04-14 04:27:03 UTC

Acknowledgments:

Name: Pritam Singh (Red Hat)

Comment 15 Huzaifa S. Sidhpurwala 2020-04-14 04:27:35 UTC

Created freeipa tracking bugs for this issue:

Affects: fedora-all [bug 1823621]

Comment 16 Alexander Bokovoy 2020-04-14 07:27:53 UTC

Link FreeIPA issue 8268 here: https://pagure.io/freeipa/issue/8268 

FreeIPA team agrees with Red Hat Security Response Team assessment that this is a low severity, low priority issue. 
The fix will be merged into FreeIPA upstream but no separate release will be done.

Comment 17 errata-xmlrpc 2020-09-29 19:57:51 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:3936 https://access.redhat.com/errata/RHSA-2020:3936

Comment 18 Product Security DevOps Team 2020-09-29 21:59:32 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-1722

Comment 19 errata-xmlrpc 2020-11-04 02:49:58 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:4670 https://access.redhat.com/errata/RHSA-2020:4670