rhsa-2017:2687
Vulnerability from csaf_redhat
Published
2017-09-12 17:09
Modified
2024-11-14 23:37
Summary
Red Hat Security Advisory: instack-undercloud security update

Notes

Topic
An update for instack-undercloud is now available for Red Hat OpenStack Platform 8.0 (Liberty) director. 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
instack-undercloud provides a collection of scripts and elements that can be used to install an OpenStack undercloud (using python-instack). Security Fix(es): * A flaw was found in instack-undercloud where pre-install and security policy scripts used insecure temporary files. A local user could exploit this flaw to conduct a symbolic-link attack, allowing them to overwrite the contents of arbitrary files. (CVE-2017-7549) This issue was discovered by Matthew Booth (Red Hat).
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": {
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      "text": "Moderate"
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    "category": "csaf_security_advisory",
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    "distribution": {
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    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "An update for instack-undercloud is now available for Red Hat OpenStack Platform 8.0 (Liberty) director.\n\nRed 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.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "instack-undercloud provides a collection of scripts and elements that can be used to install an OpenStack undercloud (using python-instack).\n\nSecurity Fix(es):\n\n* A flaw was found in instack-undercloud where pre-install and security policy scripts used insecure temporary files. A local user could exploit this flaw to conduct a symbolic-link attack, allowing them to overwrite the contents of arbitrary files. (CVE-2017-7549)\n\nThis issue was discovered by Matthew Booth (Red Hat).",
        "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"
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    "publisher": {
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    "references": [
      {
        "category": "self",
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        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2017/rhsa-2017_2687.json"
      }
    ],
    "title": "Red Hat Security Advisory: instack-undercloud security update",
    "tracking": {
      "current_release_date": "2024-11-14T23:37:39+00:00",
      "generator": {
        "date": "2024-11-14T23:37:39+00:00",
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      "id": "RHSA-2017:2687",
      "initial_release_date": "2017-09-12T17:09:10+00:00",
      "revision_history": [
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          "date": "2017-09-12T17:09:10+00:00",
          "number": "1",
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      "status": "final",
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  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
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                "name": "OpenStack 8.0 Director for RHEL 7",
                "product": {
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                  "product_id": "7Server-RH7-RHOS-8.0-Director",
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          },
          {
            "branches": [
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                "name": "instack-undercloud-0:2.2.7-10.el7ost.src",
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                "name": "instack-undercloud-0:2.2.7-10.el7ost.noarch",
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  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Matthew Booth"
          ],
          "organization": "Red Hat",
          "summary": "This issue was discovered by Red Hat."
        }
      ],
      "cve": "CVE-2017-7549",
      "cwe": {
        "id": "CWE-377",
        "name": "Insecure Temporary File"
      },
      "discovery_date": "2017-07-12T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1477403"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in instack-undercloud where pre-install and security policy scripts used insecure temporary files. A local user could exploit this flaw to conduct a symbolic-link attack, allowing them to overwrite the contents of arbitrary files.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "instack-undercloud: uses hardcoded /tmp paths",
          "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": {
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        ]
      },
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          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2017-7549"
        },
        {
          "category": "external",
          "summary": "RHBZ#1477403",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1477403"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2017-7549",
          "url": "https://www.cve.org/CVERecord?id=CVE-2017-7549"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2017-7549",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-7549"
        }
      ],
      "release_date": "2017-08-14T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2017-09-12T17:09:10+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": [
            "7Server-RH7-RHOS-8.0-Director:instack-undercloud-0:2.2.7-10.el7ost.noarch",
            "7Server-RH7-RHOS-8.0-Director:instack-undercloud-0:2.2.7-10.el7ost.src"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2017:2687"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:L/A:N",
            "version": "3.0"
          },
          "products": [
            "7Server-RH7-RHOS-8.0-Director:instack-undercloud-0:2.2.7-10.el7ost.noarch",
            "7Server-RH7-RHOS-8.0-Director:instack-undercloud-0:2.2.7-10.el7ost.src"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "instack-undercloud: uses hardcoded /tmp paths"
    }
  ]
}


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