Bug 2066568 (CVE-2022-27649)

Summary:	CVE-2022-27649 podman: Default inheritable capabilities for linux container should be empty
Product:	[Other] Security Response	Reporter:	TEJ RATHI <trathi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	acui, ahanwate, bbaude, bmontgom, carnil, container-sig, debarshir, dwalsh, eparis, jburrell, jligon, jnovy, jokerman, lsm5, mheon, nstielau, patrick, pehunt, pthomas, rh.container.bot, santiago, security-response-team, sponnaga, tsweeney, umohnani, vkumar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	podman 4.0.3	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in Podman, where containers were started incorrectly with non-empty default permissions. A vulnerability was found in Moby (Docker Engine), where containers were started incorrectly with non-empty inheritable Linux process capabilities. This flaw allows an attacker with access to programs with inheritable file capabilities to elevate those capabilities to the permitted set when execve(2) runs.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-12-06 01:02:51 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:	2067502, 2067503, 2067504, 2067505, 2067506, 2067507, 2067508, 2067509, 2067510, 2067511, 2067512, 2067513, 2067514, 2067515, 2067516, 2067517, 2067518, 2067519, 2067520, 2067521, 2067522, 2067523, 2067524, 2067525, 2067526, 2067527, 2070102, 2070103
Bug Blocks:	2064591, 2070125

Description TEJ RATHI 2022-03-22 05:02:47 UTC

A bug was found in Moby (Docker Engine) where containers were incorrectly started with non-empty inheritable Linux process capabilities, creating an atypical Linux environment and enabling programs with inheritable file capabilities to elevate those capabilities to the permitted set during execve(2). Normally, when executable programs have specified permitted file capabilities, otherwise unprivileged users and processes can execute those programs and gain the specified file capabilities up to the bounding set. Due to this bug, containers which included executable programs with inheritable file capabilities allowed otherwise unprivileged users and processes to additionally gain these inheritable file capabilities up to the container's bounding set. Containers which use Linux users and groups to perform privilege separation inside the container are most directly impacted.

Comment 4 Avinash Hanwate 2022-03-30 12:35:24 UTC

Created podman tracking bugs for this issue:

Affects: fedora-all [bug 2070102]

Comment 7 Salvatore Bonaccorso 2022-04-01 19:10:28 UTC

Reference to podman project: https://github.com/containers/podman/commit/aafa80918a245edcbdaceb1191d749570f1872d0

Comment 9 errata-xmlrpc 2022-04-19 15:35:51 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Extended Update Support

Via RHSA-2022:1407 https://access.redhat.com/errata/RHSA-2022:1407

Comment 10 errata-xmlrpc 2022-04-26 17:33:40 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2022:1565 https://access.redhat.com/errata/RHSA-2022:1565

Comment 11 errata-xmlrpc 2022-04-26 17:33:59 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2022:1566 https://access.redhat.com/errata/RHSA-2022:1566

Comment 15 errata-xmlrpc 2022-05-10 13:18:06 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2022:1762 https://access.redhat.com/errata/RHSA-2022:1762

Comment 16 errata-xmlrpc 2022-05-18 13:57:02 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2022:4651 https://access.redhat.com/errata/RHSA-2022:4651

Comment 17 errata-xmlrpc 2022-05-31 12:15:00 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Extended Update Support

Via RHSA-2022:4816 https://access.redhat.com/errata/RHSA-2022:4816

Comment 18 Product Security DevOps Team 2022-12-06 01:02:48 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-2022-27649