RHSA-2017_2557

Vulnerability from csaf_redhat - Published: 2017-08-30 13:47 - Updated: 2024-11-14 23:36
Summary
Red Hat Security Advisory: instack-undercloud security update
Severity
Moderate
Notes
Topic: An update for instack-undercloud is now available for Red Hat OpenStack Platform 9.0 (Mitaka) 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.
CVE-2017-7549

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.

6.1 (Medium)
CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:L/A:N
CWE-377 - Insecure Temporary File
Vendor Fix For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 https://access.redhat.com/errata/RHSA-2017:2557
References
Acknowledgments
Red Hat Matthew Booth
To clipboard 

{
  "document": {
    "aggregate_severity": {
      "namespace": "https://access.redhat.com/security/updates/classification/",
      "text": "Moderate"
    },
    "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 instack-undercloud is now available for Red Hat OpenStack Platform 9.0 (Mitaka) 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"
      }
    ],
    "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-2017:2557",
        "url": "https://access.redhat.com/errata/RHSA-2017:2557"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/updates/classification/#moderate",
        "url": "https://access.redhat.com/security/updates/classification/#moderate"
      },
      {
        "category": "external",
        "summary": "1477403",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1477403"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2017/rhsa-2017_2557.json"
      }
    ],
    "title": "Red Hat Security Advisory: instack-undercloud security update",
    "tracking": {
      "current_release_date": "2024-11-14T23:36:50+00:00",
      "generator": {
        "date": "2024-11-14T23:36:50+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "4.2.1"
        }
      },
      "id": "RHSA-2017:2557",
      "initial_release_date": "2017-08-30T13:47:40+00:00",
      "revision_history": [
        {
          "date": "2017-08-30T13:47:40+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2017-08-30T13:47:40+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2024-11-14T23:36:50+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "OpenStack 9.0 Director for RHEL 7",
                "product": {
                  "name": "OpenStack 9.0 Director for RHEL 7",
                  "product_id": "7Server-RH7-RHOS-9.0-Director",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:openstack-director:9::el7"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat OpenStack Platform"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "instack-undercloud-0:4.0.0-17.el7ost.src",
                "product": {
                  "name": "instack-undercloud-0:4.0.0-17.el7ost.src",
                  "product_id": "instack-undercloud-0:4.0.0-17.el7ost.src",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/instack-undercloud@4.0.0-17.el7ost?arch=src"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "src"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "instack-undercloud-0:4.0.0-17.el7ost.noarch",
                "product": {
                  "name": "instack-undercloud-0:4.0.0-17.el7ost.noarch",
                  "product_id": "instack-undercloud-0:4.0.0-17.el7ost.noarch",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/instack-undercloud@4.0.0-17.el7ost?arch=noarch"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "noarch"
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "instack-undercloud-0:4.0.0-17.el7ost.noarch as a component of OpenStack 9.0 Director for RHEL 7",
          "product_id": "7Server-RH7-RHOS-9.0-Director:instack-undercloud-0:4.0.0-17.el7ost.noarch"
        },
        "product_reference": "instack-undercloud-0:4.0.0-17.el7ost.noarch",
        "relates_to_product_reference": "7Server-RH7-RHOS-9.0-Director"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "instack-undercloud-0:4.0.0-17.el7ost.src as a component of OpenStack 9.0 Director for RHEL 7",
          "product_id": "7Server-RH7-RHOS-9.0-Director:instack-undercloud-0:4.0.0-17.el7ost.src"
        },
        "product_reference": "instack-undercloud-0:4.0.0-17.el7ost.src",
        "relates_to_product_reference": "7Server-RH7-RHOS-9.0-Director"
      }
    ]
  },
  "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": {
        "fixed": [
          "7Server-RH7-RHOS-9.0-Director:instack-undercloud-0:4.0.0-17.el7ost.noarch",
          "7Server-RH7-RHOS-9.0-Director:instack-undercloud-0:4.0.0-17.el7ost.src"
        ]
      },
      "references": [
        {
          "category": "self",
          "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": "2017-08-30T13:47:40+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-9.0-Director:instack-undercloud-0:4.0.0-17.el7ost.noarch",
            "7Server-RH7-RHOS-9.0-Director:instack-undercloud-0:4.0.0-17.el7ost.src"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2017:2557"
        }
      ],
      "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-9.0-Director:instack-undercloud-0:4.0.0-17.el7ost.noarch",
            "7Server-RH7-RHOS-9.0-Director:instack-undercloud-0:4.0.0-17.el7ost.src"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "instack-undercloud: uses hardcoded /tmp paths"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.



Detection rules are retrieved from Rulezet.