FKIE_CVE-2017-7549

Vulnerability from fkie_nvd - Published: 2017-09-21 21:29 - Updated: 2026-06-17 01:24
Severity
6.4 (Medium) - CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N
Summary
A flaw was found in instack-undercloud 7.2.0 as packaged in Red Hat OpenStack Platform Pike, 6.1.0 as packaged in Red Hat OpenStack Platform Oacta, 5.3.0 as packaged in Red Hat OpenStack Newton, 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.
References
secalert@redhat.comhttp://www.securityfocus.com/bid/100407Third Party Advisory, VDB Entry
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2017:2557
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2017:2649
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2017:2687
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2017:2693
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2017:2726
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1477403Issue Tracking, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/100407Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2017:2557
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2017:2649
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2017:2687
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2017:2693
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2017:2726
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1477403Issue Tracking, Vendor Advisory
Impacted products
Vendor Product Version
openstack instack-undercloud 7.2.0
redhat openstack 12
openstack instack-undercloud 6.1.0
redhat openstack 11
openstack instack-undercloud 5.3.0
redhat openstack 10
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "instack-undercloud",
          "vendor": "Red Hat, Inc.",
          "versions": [
            {
              "status": "affected",
              "version": "Pike, 12: v7.2.0, Ocata, 11: v6.1.0, Newton, 10: v5.3.0"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in instack-undercloud 7.2.0 as packaged in Red Hat OpenStack Platform Pike, 6.1.0 as packaged in Red Hat OpenStack Platform Oacta, 5.3.0 as packaged in Red Hat OpenStack Newton, 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."
    },
    {
      "lang": "es",
      "value": "Se ha encontrado un error en la versi\u00f3n 7.2.0 de instack-undercloud tal y como viene incorporado en Red Hat OpenStack Platform Pike; la versi\u00f3n 6.1.0 en Red Hat OpenStack Platform Oacta y la versi\u00f3n 5.3.0 en Red Hat OpenStack Newton, en donde los scripts de preinstalaci\u00f3n y pol\u00edticas de seguridad emplearon archivos temporales no seguros. Un usuario local podr\u00eda explotar esta vulnerabilidad para llevar a cabo un ataque de enlace simb\u00f3lico que les permita sobrescribir el contenido de archivos arbitrarios."
    }
  ],
  "id": "CVE-2017-7549",
  "lastModified": "2026-06-17T01:24:35.360",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 3.3,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 3.4,
        "impactScore": 4.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
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    ],
    "cvssMetricV30": [
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        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 6.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N",
          "version": "3.0"
        },
        "exploitabilityScore": 1.1,
        "impactScore": 4.7,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2017-09-21T21:29:00.447",
  "references": [
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      "tags": [
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      "tags": [
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    },
    {
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    }
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  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-377"
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      "source": "secalert@redhat.com",
      "type": "Secondary"
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    {
      "description": [
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          "lang": "en",
          "value": "CWE-59"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Secondary"
    }
  ]
}



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