Vulnerability-Lookup

RHSA-2020:2776

Vulnerability from csaf_redhat - Published: 2020-07-01 16:05 - Updated: 2025-11-21 18:15

Summary

Red Hat Security Advisory: OpenShift Container Platform 4.2.36 cri-o security update

Severity

Moderate

Notes

Topic: Red Hat OpenShift Container Platform release 4.2.36 is now available with updates to packages and images that fix several bugs and add enhancements. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Details: Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. Security Fix(es): * cri-o: infra container reparented to systemd following OOM Killer killing its conmon (CVE-2019-14891) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2019-14891

A flaw was found in cri-o, as a result of all pod-related processes being placed in the same memory cgroup. This can result in container management (conmon) processes being killed if a workload process triggers an out-of-memory (OOM) condition for the cgroup. An attacker could abuse this flaw to get host network access on an cri-o host.

5.0 (Medium)


                
                  CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

CWE-460 - Improper Cleanup on Thrown Exception

Affected products

Fixed 8 products

Product	Version	Remediation
Unresolved product id: 7Server-RH7-RHOSE-4.2:cri-o-0:1.14.12-24.dev.rhaos4.2.gita17905f.el7.src	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-RH7-RHOSE-4.2:cri-o-0:1.14.12-24.dev.rhaos4.2.gita17905f.el7.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-RH7-RHOSE-4.2:cri-o-debuginfo-0:1.14.12-24.dev.rhaos4.2.gita17905f.el7.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: 8Base-RHOSE-4.2:cri-o-0:1.14.12-15.dev.rhaos4.2.gita17905f.el8.s390x	—	Vendor Fix fix Workaround
Unresolved product id: 8Base-RHOSE-4.2:cri-o-0:1.14.12-15.dev.rhaos4.2.gita17905f.el8.src	—	Vendor Fix fix Workaround
Unresolved product id: 8Base-RHOSE-4.2:cri-o-0:1.14.12-15.dev.rhaos4.2.gita17905f.el8.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: 8Base-RHOSE-4.2:cri-o-debuginfo-0:1.14.12-15.dev.rhaos4.2.gita17905f.el8.x86_64	—	Vendor Fix fix Workaround
Unresolved product id: 8Base-RHOSE-4.2:cri-o-debugsource-0:1.14.12-15.dev.rhaos4.2.gita17905f.el8.x86_64	—	Vendor Fix fix Workaround

Threats

Impact Moderate

References

9 references

URL	Category
https://access.redhat.com/errata/RHSA-2020:2776	self
https://access.redhat.com/security/updates/classi…	external
https://bugzilla.redhat.com/show_bug.cgi?id=1772280	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2019-14891	self
https://bugzilla.redhat.com/show_bug.cgi?id=1772280	external
https://www.cve.org/CVERecord?id=CVE-2019-14891	external
https://nvd.nist.gov/vuln/detail/CVE-2019-14891	external
https://capsule8.com/blog/oomypod-nothin-to-cri-o-bout/	external

Acknowledgments

Capsule8 Nick Freeman

JSON

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          "text": "A flaw was found in cri-o, as a result of all pod-related processes being placed in the same memory cgroup. This can result in container management (conmon) processes being killed if a workload process triggers an out-of-memory (OOM) condition for the cgroup. An attacker could abuse this flaw to get host network access on an cri-o host.",
          "title": "Vulnerability description"
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          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2020-07-01T16:05:03+00:00",
          "details": "For OpenShift Container Platform 4.2 see the following documentation, which\nwill be updated shortly for release 4.2.36, for important instructions on\nhow to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.openshift.com/container-platform/4.2/release_notes/ocp-4-2-release-notes.html\n\nDetails on how to access this content are available at\nhttps://docs.openshift.com/container-platform/4.2/updating/updating-cluster-cli.html.",
          "product_ids": [
            "7Server-RH7-RHOSE-4.2:cri-o-0:1.14.12-24.dev.rhaos4.2.gita17905f.el7.src",
            "7Server-RH7-RHOSE-4.2:cri-o-0:1.14.12-24.dev.rhaos4.2.gita17905f.el7.x86_64",
            "7Server-RH7-RHOSE-4.2:cri-o-debuginfo-0:1.14.12-24.dev.rhaos4.2.gita17905f.el7.x86_64",
            "8Base-RHOSE-4.2:cri-o-0:1.14.12-15.dev.rhaos4.2.gita17905f.el8.s390x",
            "8Base-RHOSE-4.2:cri-o-0:1.14.12-15.dev.rhaos4.2.gita17905f.el8.src",
            "8Base-RHOSE-4.2:cri-o-0:1.14.12-15.dev.rhaos4.2.gita17905f.el8.x86_64",
            "8Base-RHOSE-4.2:cri-o-debuginfo-0:1.14.12-15.dev.rhaos4.2.gita17905f.el8.x86_64",
            "8Base-RHOSE-4.2:cri-o-debugsource-0:1.14.12-15.dev.rhaos4.2.gita17905f.el8.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2020:2776"
        },
        {
          "category": "workaround",
          "details": "As of cri-o v1.15 you can set conmon_cgroup = \"system.slice\" in the crio.runtime section of /etc/crio/crio.conf. On OpenShift Container Platform 4.x that can be done by following the documentation here:\nhttps://access.redhat.com/documentation/en-us/openshift_container_platform/4.2/html/architecture/architecture-rhcos\n\nFor OpenShift Container Platform 3.x you can edit /etc/crio/crio.conf directly on the worker node if using cri-o on that version. Cri-o is not the default container engine on that version, Docker is.",
          "product_ids": [
            "7Server-RH7-RHOSE-4.2:cri-o-0:1.14.12-24.dev.rhaos4.2.gita17905f.el7.src",
            "7Server-RH7-RHOSE-4.2:cri-o-0:1.14.12-24.dev.rhaos4.2.gita17905f.el7.x86_64",
            "7Server-RH7-RHOSE-4.2:cri-o-debuginfo-0:1.14.12-24.dev.rhaos4.2.gita17905f.el7.x86_64",
            "8Base-RHOSE-4.2:cri-o-0:1.14.12-15.dev.rhaos4.2.gita17905f.el8.s390x",
            "8Base-RHOSE-4.2:cri-o-0:1.14.12-15.dev.rhaos4.2.gita17905f.el8.src",
            "8Base-RHOSE-4.2:cri-o-0:1.14.12-15.dev.rhaos4.2.gita17905f.el8.x86_64",
            "8Base-RHOSE-4.2:cri-o-debuginfo-0:1.14.12-15.dev.rhaos4.2.gita17905f.el8.x86_64",
            "8Base-RHOSE-4.2:cri-o-debugsource-0:1.14.12-15.dev.rhaos4.2.gita17905f.el8.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.0,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L",
            "version": "3.0"
          },
          "products": [
            "7Server-RH7-RHOSE-4.2:cri-o-0:1.14.12-24.dev.rhaos4.2.gita17905f.el7.src",
            "7Server-RH7-RHOSE-4.2:cri-o-0:1.14.12-24.dev.rhaos4.2.gita17905f.el7.x86_64",
            "7Server-RH7-RHOSE-4.2:cri-o-debuginfo-0:1.14.12-24.dev.rhaos4.2.gita17905f.el7.x86_64",
            "8Base-RHOSE-4.2:cri-o-0:1.14.12-15.dev.rhaos4.2.gita17905f.el8.s390x",
            "8Base-RHOSE-4.2:cri-o-0:1.14.12-15.dev.rhaos4.2.gita17905f.el8.src",
            "8Base-RHOSE-4.2:cri-o-0:1.14.12-15.dev.rhaos4.2.gita17905f.el8.x86_64",
            "8Base-RHOSE-4.2:cri-o-debuginfo-0:1.14.12-15.dev.rhaos4.2.gita17905f.el8.x86_64",
            "8Base-RHOSE-4.2:cri-o-debugsource-0:1.14.12-15.dev.rhaos4.2.gita17905f.el8.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "cri-o: infra container reparented to systemd following OOM Killer killing it\u0027s conmon"
    }
  ]
}

CVE-2019-14891 (GCVE-0-2019-14891)

Vulnerability from cvelistv5 – Published: 2019-11-25 10:31 – Updated: 2024-08-05 00:26

Summary

Severity

5 (Medium)


                        
                          CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

CWE

CWE-460

Assigner

redhat CNA under the redhat root

CNA scorecard B 82/100 over 1076 records in the last 180 days details

References

1 reference

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
n/a	cri-o	Affected: n/a

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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