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          "text": "The exploitation of this flaw requires RPM's package verification level to be set to \"digest\" or \"none\". In addition, to exploit this flaw, an attacker must either compromise an RPM repository or convince an administrator to install an untrusted RPM.  It is strongly recommended to only use RPMs from trusted repositories.",
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            "rhel-br-8.5.0::baseos:dnf-automatic-0:4.7.0-4.el8",
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            "rhel-br-8.5.0::baseos:dnf-plugins-core-0:4.0.21-3.el8.src",
            "rhel-br-8.5.0::baseos:dnf-utils",
            "rhel-br-8.5.0::baseos:libdnf-0:0.63.0-3.el8",
            "rhel-br-8.5.0::baseos:libdnf-0:0.63.0-3.el8.src",
            "rhel-br-8.5.0::baseos:python3-dnf-0:4.7.0-4.el8",
            "rhel-br-8.5.0::baseos:python3-dnf-plugin-modulesync",
            "rhel-br-8.5.0::baseos:python3-dnf-plugin-post-transaction-actions-0:4.0.21-3.el8",
            "rhel-br-8.5.0::baseos:python3-dnf-plugin-versionlock-0:4.0.21-3.el8",
            "rhel-br-8.5.0::baseos:python3-dnf-plugins-core-0:4.0.21-3.el8",
            "rhel-br-8.5.0::baseos:python3-hawkey-0:0.63.0-3.el8",
            "rhel-br-8.5.0::baseos:python3-libdnf-0:0.63.0-3.el8",
            "rhel-br-8.5.0::baseos:yum-0:4.7.0-4.el8",
            "rhel-br-8.5.0::baseos:yum-utils-0:4.0.21-3.el8",
            "rhel-br-8.5.0::crb:libdnf-0:0.63.0-3.el8"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2021:4464"
        },
        {
          "category": "workaround",
          "details": "A mitigation for this flaw is to set %_pkgverify_level all` or `%_pkgverify_level signature` in `/etc/rpm/macros`.",
          "product_ids": [
            "rhel-8:libdnf.src",
            "rhel-9.0:libdnf.src"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "version": "3.1",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H",
            "baseScore": 6.4,
            "baseSeverity": "MEDIUM"
          },
          "products": [
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        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate",
          "product_ids": [
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            "rhel-br-8.5.0::baseos:python3-dnf-0:4.7.0-4.el8",
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            "rhel-br-8.5.0::baseos:python3-hawkey-0:0.63.0-3.el8",
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            "rhel-br-8.5.0::crb:libdnf-0:0.63.0-3.el8"
          ]
        }
      ],
      "title": "Signature verification bypass via signature placed in the main RPM header"
    }
  ]
}