{
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      "text": "Medium"
    },
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "TuxCare License Agreement",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "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 Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
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      "generator": {
        "date": "2026-06-13T01:36:37Z",
        "engine": {
          "name": "pyCSAF"
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      "id": "CVE-2021-22923-ELS_OS-ORACLELINUX7ELS",
      "initial_release_date": "2021-08-05T21:15:00Z",
      "revision_history": [
        {
          "date": "2021-08-05T21:15:00Z",
          "number": "1",
          "summary": "Initial version"
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        {
          "date": "2026-06-13T01:36:37Z",
          "number": "2",
          "summary": "Official Publication"
        }
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      "status": "final",
      "version": "2"
    },
    "title": "Security update on CVE-2021-22923"
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  "vulnerabilities": [
    {
      "cve": "CVE-2021-22923",
      "cwe": {
        "id": "CWE-319",
        "name": "Cleartext Transmission of Sensitive Information"
      },
      "notes": [
        {
          "category": "description",
          "text": "When curl is instructed to get content using the metalink feature, and a user name and password are used to download the metalink XML file, those same credentials are then subsequently passed on to each of the servers from which curl will download or try to download the contents from. Often contrary to the user's expectations and intentions and without telling the user it happened.",
          "title": "Vulnerability description"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's 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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          "Oracle-Linux-7:libcurl-0:7.29.0-59.0.3.el7_9.2.tuxcare.els2.x86_64",
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          "Oracle-Linux-7:libcurl-devel-0:7.29.0-59.0.3.el7_9.2.tuxcare.els2.x86_64",
          "Oracle-Linux-7:libcurl-devel-0:7.29.0-59.0.3.el7_9.2.x86_64"
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      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2021-22923"
        },
        {
          "category": "external",
          "summary": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf",
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf"
        },
        {
          "category": "external",
          "summary": "https://hackerone.com/reports/1213181",
          "url": "https://hackerone.com/reports/1213181"
        },
        {
          "category": "external",
          "summary": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/",
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/"
        },
        {
          "category": "external",
          "summary": "https://security.gentoo.org/glsa/202212-01",
          "url": "https://security.gentoo.org/glsa/202212-01"
        },
        {
          "category": "external",
          "summary": "https://security.netapp.com/advisory/ntap-20210902-0003/",
          "url": "https://security.netapp.com/advisory/ntap-20210902-0003/"
        },
        {
          "category": "external",
          "summary": "https://www.oracle.com/security-alerts/cpuoct2021.html",
          "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
        }
      ],
      "release_date": "2021-08-05T21:15:00Z",
      "remediations": [
        {
          "category": "no_fix_planned",
          "date": "2026-06-12T13:07:21.139317Z",
          "details": "This issue only affects the curl command-line tool when it is compiled with Metalink support and explicitly used with the --metalink option to fetch a Metalink XML using credentials; libcurl-based applications and ordinary HTTP(S) transfers are unaffected. Exploitation requires deliberate user interaction and a very specific, non-default workflow, and it yields no code execution or privilege escalation—only potential disclosure of those credentials to the Metalink-listed mirrors—so practical risk in centrally managed server/VM deployments is low. Moreover, Metalink support was removed from curl starting with version 7.78.0, further constraining exposure.",
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          "cvss_v2": {
            "accessComplexity": "HIGH",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 2.6,
            "baseSeverity": "LOW",
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:H/Au:N/C:P/I:N/A:N",
            "version": "2.0"
          },
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N",
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          "category": "impact",
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    }
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}