rhsa-2018_0646
Vulnerability from csaf_redhat
Published
2018-04-05 16:39
Modified
2024-11-05 20:27
Summary
Red Hat Security Advisory: python-paramiko security update

Notes

Topic
An update for python-paramiko is now available for Red Hat Ansible Engine 2 for RHEL 7. 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 python-paramiko package provides a Python module that implements the SSH2 protocol for encrypted and authenticated connections to remote machines. Unlike SSL, the SSH2 protocol does not require hierarchical certificates signed by a powerful central authority. The protocol also includes the ability to open arbitrary channels to remote services across an encrypted tunnel. Security Fix(es): * python-paramiko: Authentication bypass in transport.py (CVE-2018-7750) For more details about the security issue(s), including the impact, a CVSS score, 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.


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      "text": "Low"
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    "category": "csaf_security_advisory",
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    "notes": [
      {
        "category": "summary",
        "text": "An update for python-paramiko is now available for Red Hat Ansible Engine 2 for RHEL 7.\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 python-paramiko package provides a Python module that implements the SSH2 protocol for encrypted and authenticated connections to remote machines. Unlike SSL, the SSH2 protocol does not require hierarchical certificates signed by a powerful central authority. The protocol also includes the ability to open arbitrary channels to remote services across an encrypted tunnel.\n\nSecurity Fix(es):\n\n* python-paramiko: Authentication bypass in transport.py (CVE-2018-7750)\n\nFor more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.",
        "title": "Details"
      },
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        "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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        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2018/rhsa-2018_0646.json"
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    "title": "Red Hat Security Advisory: python-paramiko security update",
    "tracking": {
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      "id": "RHSA-2018:0646",
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  "vulnerabilities": [
    {
      "cve": "CVE-2018-7750",
      "cwe": {
        "id": "CWE-287",
        "name": "Improper Authentication"
      },
      "discovery_date": "2018-03-16T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1557130"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "It was found that when acting as an SSH server, paramiko did not properly check whether authentication is completed before processing other requests. A customized SSH client could use this to bypass authentication when accessing any resources controlled by paramiko.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "python-paramiko: Authentication bypass in transport.py",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This flaw is a user authentication bypass in the SSH Server functionality of paramiko (normally used by subclassing `paramiko.ServerInterface`). Where paramiko is used only for its client-side functionality (e.g. `paramiko.SSHClient`), the vulnerability is not exposed and thus cannot be exploited.\n\nThe following Red Hat products use paramiko only in client-side mode. Server side functionality is not used.\n\n* Red Hat Ceph Storage 2\n* Red Hat CloudForms 4\n* Red Hat Enterprise Linux 7\n* Red Hat Enterprise Virtualization\n* Red Hat Gluster Storage 3\n* Red Hat Openshift Container Platform\n* Red Hat Quick Cloud Installer\n* Red Hat Satellite 6\n* Red Hat Storage Console 2\n* Red Hat OpenStack Platform\n* Red Hat Update Infrastructure",
          "title": "Statement"
        },
        {
          "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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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2018-7750"
        },
        {
          "category": "external",
          "summary": "RHBZ#1557130",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1557130"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2018-7750",
          "url": "https://www.cve.org/CVERecord?id=CVE-2018-7750"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2018-7750",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-7750"
        }
      ],
      "release_date": "2018-03-13T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2018-04-05T16:39:00+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-Ansible-2:python-paramiko-0:2.1.1-4.el7.noarch",
            "7Server-Ansible-2:python-paramiko-0:2.1.1-4.el7.src"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2018:0646"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          },
          "products": [
            "7Server-Ansible-2:python-paramiko-0:2.1.1-4.el7.noarch",
            "7Server-Ansible-2:python-paramiko-0:2.1.1-4.el7.src"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ],
      "title": "python-paramiko: Authentication bypass in transport.py"
    }
  ]
}


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