Bug 2051730 (CVE-2022-0532) - CVE-2022-0532 cri-o: pod with access to 'hostIPC' and 'hostNetwork' kernel namespace allows sysctl from the list of safe sysctls to be applied to the host
Summary: CVE-2022-0532 cri-o: pod with access to 'hostIPC' and 'hostNetwork' kernel na...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2022-0532
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2051905 2051906
Blocks: 2050386
TreeView+ depends on / blocked
 
Reported: 2022-02-07 22:06 UTC by Przemyslaw Roguski
Modified: 2023-09-25 06:20 UTC (History)
16 users (show)

Fixed In Version: cri-o 1.23.1
Doc Type: If docs needed, set a value
Doc Text:
An incorrect sysctls validation vulnerability was found in CRI-O. The sysctls from the list of "safe" sysctls specified for the cluster [0] will be applied to the host if an attacker can create a pod with a `hostIPC` and `hostNetwork` kernel namespace.
Clone Of:
Environment:
Last Closed: 2022-03-10 19:45:43 UTC
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2022:0055 0 None None None 2022-03-10 13:16:34 UTC

Description Przemyslaw Roguski 2022-02-07 22:06:03 UTC 
It was found that if a user can create a pod with a `hostIPC` and `hostNetwork` kernel namespace and is able to specify a sysctl from the list of "safe" sysctls specified for the cluster (by default, these are specified here
<https://kubernetes.io/docs/tasks/administer-cluster/sysctl-cluster/#enabling-unsafe-sysctls>),
then the sysctls will be applied to the host.
Comment 3 Przemyslaw Roguski 2022-02-08 10:29:41 UTC 
Created cri-o tracking bugs for this issue:

Affects: fedora-all [bug 2051906]
Comment 4 Przemyslaw Roguski 2022-02-08 15:05:24 UTC 
All currently supported version of CRI-O are affected by this vulnerability.
Comment 5 Przemyslaw Roguski 2022-02-10 11:12:33 UTC 
Upstream fix:
https://github.com/cri-o/cri-o/pull/5610
Comment 7 errata-xmlrpc 2022-03-10 13:16:32 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.10

Via RHSA-2022:0055 https://access.redhat.com/errata/RHSA-2022:0055
Comment 8 Product Security DevOps Team 2022-03-10 19:45:41 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-2022-0532
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