Bug 1814627 (CVE-2020-10685)

Summary:	CVE-2020-10685 Ansible: modules which use files encrypted with vault are not properly cleaned up
Product:	[Other] Security Response	Reporter:	Borja Tarraso <btarraso>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	a.badger, amctagga, anharris, bcoca, bniver, carnil, cmeyers, dbecker, flucifre, gblomqui, gmainwar, gmeno, hvyas, jcammara, jjoyce, jschluet, jtanner, kbasil, kevin, lhh, lpeer, mabashia, maxim, mbenjamin, mburns, mhackett, notting, puebele, rhos-maint, rpetrell, sclewis, sdoran, slinaber, smcdonal, tkuratom, tvignaud, vbellur, vereddy, ytale
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	ansible-engine 2.7.17, ansible-engine 2.8.11, ansible-engine 2.9.7	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found on Ansible Engine when using modules which decrypts vault files such as assemble, script, unarchive, win_copy, aws_s3 or copy modules. The temporary directory is created in /tmp leaves the secrets unencrypted. On Operating Systems which /tmp is not a tmpfs but part of the root partition, the directory is only cleared on boot and the decrypted data remains when the host is switched off. The system will be vulnerable when the system is not running. So decrypted data must be cleared as soon as possible and the data which normally is encrypted is sensible.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-04-22 16:32:20 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:	1814628, 1814629, 1814630, 1814631, 1814632, 1814633, 1814634, 1814635, 1815126, 1816312, 1816313, 1816315, 1816914
Bug Blocks:	1800569

Description Borja Tarraso 2020-03-18 12:07:53 UTC

When a module uses a file that was encrypted with vault, it doesn not remove the decrypted file in /tmp after its usage.

Comment 1 Borja Tarraso 2020-03-18 12:08:15 UTC

Acknowledgments:

Name: Damien Aumaitre (Quarkslab), Nicolas Surbayrole (Quarkslab)

Comment 3 Borja Tarraso 2020-03-18 12:08:32 UTC

Mitigation:

Currently, there is no mitigation for this issue except by removing manually the temporary created file after every run.

Comment 6 Hardik Vyas 2020-03-19 14:41:04 UTC

Red Hat Gluster Storage and Red Hat Ceph Storage no longer maintains its own version of Ansible. The fix will be provided from core Ansible. But we still ship ansible separately for ceph ubuntu.

Comment 8 Borja Tarraso 2020-03-23 19:08:42 UTC

Created ansible tracking bugs for this issue:

Affects: epel-all [bug 1816312]
Affects: fedora-all [bug 1816313]
Affects: openstack-rdo [bug 1816315]

Comment 9 Yadnyawalk Tale 2020-03-24 14:10:50 UTC

Removing CloudForms from affects list. CloudForms 5.10 & 5.11 both subscribe to Ansible repos, so we do not need to include cfme5/ansible in affects nor file trackers. ansible_engine affects entries are sufficient to inform Cloudforms customers.

Comment 10 Borja Tarraso 2020-03-24 17:41:01 UTC

Upstream fix: https://github.com/ansible/ansible/pull/68433

Comment 13 errata-xmlrpc 2020-04-22 14:09:25 UTC

This issue has been addressed in the following products:

  Red Hat Ansible Engine 2.9 for RHEL 7
  Red Hat Ansible Engine 2.9 for RHEL 8

Via RHSA-2020:1541 https://access.redhat.com/errata/RHSA-2020:1541

Comment 14 errata-xmlrpc 2020-04-22 14:09:43 UTC

This issue has been addressed in the following products:

  Red Hat Ansible Engine 2 for RHEL 7
  Red Hat Ansible Engine 2 for RHEL 8

Via RHSA-2020:1542 https://access.redhat.com/errata/RHSA-2020:1542

Comment 15 errata-xmlrpc 2020-04-22 14:10:01 UTC

This issue has been addressed in the following products:

  Red Hat Ansible Engine 2.8 for RHEL 7
  Red Hat Ansible Engine 2.8 for RHEL 8

Via RHSA-2020:1543 https://access.redhat.com/errata/RHSA-2020:1543

Comment 16 errata-xmlrpc 2020-04-22 14:10:20 UTC

This issue has been addressed in the following products:

  Red Hat Ansible Engine 2.7 for RHEL 7

Via RHSA-2020:1544 https://access.redhat.com/errata/RHSA-2020:1544

Comment 17 Product Security DevOps Team 2020-04-22 16:32:20 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-2020-10685

Comment 18 Summer Long 2021-01-18 01:23:53 UTC

Statement:

* Ansible Engine 2.7.16, 2.8.10, and 2.9.6 as well as previous versions are affected.

* Ansible Tower 3.4.5, 3.5.5 and 3.6.3 as well as previous versions are affected.

* In Red Hat OpenStack Platform, because the flaw has a lower impact, ansible is not directly customer exposed, and the fix would require a substantial amount of development, no update will be provided at this time for the RHOSP ansible package.