rhsa-2020_3050
Vulnerability from csaf_redhat
Published
2020-07-21 15:33
Modified
2024-11-22 14:40
Summary
Red Hat Security Advisory: cloud-init security, bug fix, and enhancement update

Notes

Topic
An update for cloud-init is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Low. 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
The cloud-init packages provide a set of init scripts for cloud instances. Cloud instances need special scripts to run during initialization to retrieve and install SSH keys, and to let the user run various scripts. The following packages have been upgraded to a later upstream version: cloud-init (19.4). (BZ#1811912) Security Fix(es): * cloud-init: default configuration disabled deletion of SSH host keys (CVE-2018-10896) 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. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.2 Release Notes linked from 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.


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{
  "document": {
    "aggregate_severity": {
      "namespace": "https://access.redhat.com/security/updates/classification/",
      "text": "Low"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "An update for cloud-init is now available for Red Hat Enterprise Linux 8.\n\nRed Hat Product Security has rated this update as having a security impact of Low. 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.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "The cloud-init packages provide a set of init scripts for cloud instances. Cloud instances need special scripts to run during initialization to retrieve and install SSH keys, and to let the user run various scripts.\n\nThe following packages have been upgraded to a later upstream version: cloud-init (19.4). (BZ#1811912)\n\nSecurity Fix(es):\n\n* cloud-init: default configuration disabled deletion of SSH host keys (CVE-2018-10896)\n\nFor 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.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Red Hat Enterprise Linux 8.2 Release Notes linked from the References section.",
        "title": "Details"
      },
      {
        "category": "legal_disclaimer",
        "text": "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.",
        "title": "Terms of Use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://access.redhat.com/security/team/contact/",
      "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
      "name": "Red Hat Product Security",
      "namespace": "https://www.redhat.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://access.redhat.com/errata/RHSA-2020:3050",
        "url": "https://access.redhat.com/errata/RHSA-2020:3050"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/updates/classification/#low",
        "url": "https://access.redhat.com/security/updates/classification/#low"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.2_release_notes/index",
        "url": "https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.2_release_notes/index"
      },
      {
        "category": "external",
        "summary": "1598831",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1598831"
      },
      {
        "category": "external",
        "summary": "1811912",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1811912"
      },
      {
        "category": "external",
        "summary": "1831646",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1831646"
      },
      {
        "category": "external",
        "summary": "1844366",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1844366"
      },
      {
        "category": "external",
        "summary": "1850456",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1850456"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2020/rhsa-2020_3050.json"
      }
    ],
    "title": "Red Hat Security Advisory: cloud-init security, bug fix, and enhancement update",
    "tracking": {
      "current_release_date": "2024-11-22T14:40:18+00:00",
      "generator": {
        "date": "2024-11-22T14:40:18+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "4.2.1"
        }
      },
      "id": "RHSA-2020:3050",
      "initial_release_date": "2020-07-21T15:33:44+00:00",
      "revision_history": [
        {
          "date": "2020-07-21T15:33:44+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2020-07-21T15:33:44+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2024-11-22T14:40:18+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat Enterprise Linux AppStream (v. 8)",
                "product": {
                  "name": "Red Hat Enterprise Linux AppStream (v. 8)",
                  "product_id": "AppStream-8.2.1.MAIN",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:enterprise_linux:8::appstream"
                  }
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            ],
            "category": "product_family",
            "name": "Red Hat Enterprise Linux"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "cloud-init-0:19.4-1.el8.7.noarch",
                "product": {
                  "name": "cloud-init-0:19.4-1.el8.7.noarch",
                  "product_id": "cloud-init-0:19.4-1.el8.7.noarch",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/cloud-init@19.4-1.el8.7?arch=noarch"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "noarch"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "cloud-init-0:19.4-1.el8.7.src",
                "product": {
                  "name": "cloud-init-0:19.4-1.el8.7.src",
                  "product_id": "cloud-init-0:19.4-1.el8.7.src",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/cloud-init@19.4-1.el8.7?arch=src"
                  }
                }
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            "category": "architecture",
            "name": "src"
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "cloud-init-0:19.4-1.el8.7.noarch as a component of Red Hat Enterprise Linux AppStream (v. 8)",
          "product_id": "AppStream-8.2.1.MAIN:cloud-init-0:19.4-1.el8.7.noarch"
        },
        "product_reference": "cloud-init-0:19.4-1.el8.7.noarch",
        "relates_to_product_reference": "AppStream-8.2.1.MAIN"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "cloud-init-0:19.4-1.el8.7.src as a component of Red Hat Enterprise Linux AppStream (v. 8)",
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        },
        "product_reference": "cloud-init-0:19.4-1.el8.7.src",
        "relates_to_product_reference": "AppStream-8.2.1.MAIN"
      }
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  },
  "vulnerabilities": [
    {
      "cve": "CVE-2018-10896",
      "cwe": {
        "id": "CWE-321",
        "name": "Use of Hard-coded Cryptographic Key"
      },
      "discovery_date": "2018-05-09T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1598831"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "The default cloud-init configuration included \"ssh_deletekeys: 0\", disabling cloud-init\u0027s deletion of ssh host keys. In some environments, this could lead to instances created by cloning a golden master or template system, sharing ssh host keys, and being able to impersonate one another or conduct man-in-the-middle attacks.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "cloud-init: default configuration disabled deletion of SSH host keys",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "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.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "AppStream-8.2.1.MAIN:cloud-init-0:19.4-1.el8.7.noarch",
          "AppStream-8.2.1.MAIN:cloud-init-0:19.4-1.el8.7.src"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2018-10896"
        },
        {
          "category": "external",
          "summary": "RHBZ#1598831",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1598831"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2018-10896",
          "url": "https://www.cve.org/CVERecord?id=CVE-2018-10896"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2018-10896",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-10896"
        }
      ],
      "release_date": "2018-07-06T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2020-07-21T15:33:44+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
          "product_ids": [
            "AppStream-8.2.1.MAIN:cloud-init-0:19.4-1.el8.7.noarch",
            "AppStream-8.2.1.MAIN:cloud-init-0:19.4-1.el8.7.src"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2020:3050"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 4.6,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
            "version": "3.0"
          },
          "products": [
            "AppStream-8.2.1.MAIN:cloud-init-0:19.4-1.el8.7.noarch",
            "AppStream-8.2.1.MAIN:cloud-init-0:19.4-1.el8.7.src"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ],
      "title": "cloud-init: default configuration disabled deletion of SSH host keys"
    }
  ]
}


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