opensuse-su-2021:0409-1
Vulnerability from csaf_opensuse
Published
2021-03-14 14:10
Modified
2021-03-14 14:10
Summary
Security update for stunnel

Notes

Title of the patch
Security update for stunnel
Description of the patch
This update for stunnel fixes the following issues: - Security fix: [bsc#1177580, bsc#1182529, CVE-2021-20230] * 'redirect' option does not properly handle 'verifyChain = yes' This update was imported from the SUSE:SLE-15-SP2:Update update project.
Patchnames
openSUSE-2021-409
Terms of use
CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).


To clipboard 

{
  "document": {
    "aggregate_severity": {
      "namespace": "https://www.suse.com/support/security/rating/",
      "text": "important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright 2024 SUSE LLC. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "Security update for stunnel",
        "title": "Title of the patch"
      },
      {
        "category": "description",
        "text": "This update for stunnel fixes the following issues:\n\n- Security fix: [bsc#1177580, bsc#1182529, CVE-2021-20230]\n  * \u0027redirect\u0027 option does not properly handle \u0027verifyChain = yes\u0027\n\nThis update was imported from the SUSE:SLE-15-SP2:Update update project.",
        "title": "Description of the patch"
      },
      {
        "category": "details",
        "text": "openSUSE-2021-409",
        "title": "Patchnames"
      },
      {
        "category": "legal_disclaimer",
        "text": "CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).",
        "title": "Terms of use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://www.suse.com/support/security/contact/",
      "name": "SUSE Product Security Team",
      "namespace": "https://www.suse.com/"
    },
    "references": [
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        "category": "external",
        "summary": "SUSE ratings",
        "url": "https://www.suse.com/support/security/rating/"
      },
      {
        "category": "self",
        "summary": "URL of this CSAF notice",
        "url": "https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2021_0409-1.json"
      },
      {
        "category": "self",
        "summary": "URL for openSUSE-SU-2021:0409-1",
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      },
      {
        "category": "self",
        "summary": "E-Mail link for openSUSE-SU-2021:0409-1",
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        "category": "self",
        "summary": "SUSE Bug 1177580",
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      {
        "category": "self",
        "summary": "SUSE Bug 1182529",
        "url": "https://bugzilla.suse.com/1182529"
      },
      {
        "category": "self",
        "summary": "SUSE CVE CVE-2021-20230 page",
        "url": "https://www.suse.com/security/cve/CVE-2021-20230/"
      }
    ],
    "title": "Security update for stunnel",
    "tracking": {
      "current_release_date": "2021-03-14T14:10:42Z",
      "generator": {
        "date": "2021-03-14T14:10:42Z",
        "engine": {
          "name": "cve-database.git:bin/generate-csaf.pl",
          "version": "1"
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      },
      "id": "openSUSE-SU-2021:0409-1",
      "initial_release_date": "2021-03-14T14:10:42Z",
      "revision_history": [
        {
          "date": "2021-03-14T14:10:42Z",
          "number": "1",
          "summary": "Current version"
        }
      ],
      "status": "final",
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  },
  "product_tree": {
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      {
        "branches": [
          {
            "branches": [
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                "name": "stunnel-doc-5.57-lp152.2.6.1.noarch",
                "product": {
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                  "product_id": "stunnel-doc-5.57-lp152.2.6.1.noarch"
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          {
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                  "product_id": "stunnel-5.57-lp152.2.6.1.x86_64"
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              }
            ],
            "category": "architecture",
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          },
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                  "product_identification_helper": {
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            ],
            "category": "product_family",
            "name": "SUSE Linux Enterprise"
          }
        ],
        "category": "vendor",
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    ],
    "relationships": [
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        "full_product_name": {
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  "vulnerabilities": [
    {
      "cve": "CVE-2021-20230",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2021-20230"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "A flaw was found in stunnel before 5.57, where it improperly validates client certificates when it is configured to use both redirect and verifyChain options. This flaw allows an attacker with a certificate signed by a Certificate Authority, which is not the one accepted by the stunnel server, to access the tunneled service instead of being redirected to the address specified in the redirect option. The highest threat from this vulnerability is to confidentiality.",
          "title": "CVE description"
        }
      ],
      "product_status": {
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      "references": [
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          "url": "https://www.suse.com/security/cve/CVE-2021-20230"
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        {
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          "summary": "SUSE Bug 1177580 for CVE-2021-20230",
          "url": "https://bugzilla.suse.com/1177580"
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          "summary": "SUSE Bug 1182529 for CVE-2021-20230",
          "url": "https://bugzilla.suse.com/1182529"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
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      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
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      "threats": [
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          "category": "impact",
          "date": "2021-03-14T14:10:42Z",
          "details": "important"
        }
      ],
      "title": "CVE-2021-20230"
    }
  ]
}


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