In ProFTPD through 1.3.8b before cec01cc, supplemental group inheritance grants unintended access to GID 0 because of the lack of supplemental groups from mod_sql.
{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "proftpd-basic",
            "binary_version": "1.3.6c-2ubuntu0.1"
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        {
            "binary_name": "proftpd-dev",
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            "binary_version": "1.3.6c-2ubuntu0.1"
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            "binary_name": "proftpd-mod-ldap",
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            "binary_name": "proftpd-mod-mysql",
            "binary_version": "1.3.6c-2ubuntu0.1"
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            "binary_name": "proftpd-mod-odbc",
            "binary_version": "1.3.6c-2ubuntu0.1"
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            "binary_name": "proftpd-mod-pgsql",
            "binary_version": "1.3.6c-2ubuntu0.1"
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            "binary_name": "proftpd-mod-snmp",
            "binary_version": "1.3.6c-2ubuntu0.1"
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        {
            "binary_name": "proftpd-mod-sqlite",
            "binary_version": "1.3.6c-2ubuntu0.1"
        }
    ]
}
          {
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "proftpd-basic",
            "binary_version": "1.3.7c+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-core",
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            "binary_name": "proftpd-dev",
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            "binary_name": "proftpd-mod-crypto",
            "binary_version": "1.3.7c+dfsg-1ubuntu0.1"
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        {
            "binary_name": "proftpd-mod-geoip",
            "binary_version": "1.3.7c+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-ldap",
            "binary_version": "1.3.7c+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-mysql",
            "binary_version": "1.3.7c+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-odbc",
            "binary_version": "1.3.7c+dfsg-1ubuntu0.1"
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        {
            "binary_name": "proftpd-mod-pgsql",
            "binary_version": "1.3.7c+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-snmp",
            "binary_version": "1.3.7c+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-sqlite",
            "binary_version": "1.3.7c+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-wrap",
            "binary_version": "1.3.7c+dfsg-1ubuntu0.1"
        }
    ]
}
          {
    "availability": "No subscription required",
    "binaries": [
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        {
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            "binary_version": "1.3.8.b+dfsg-1ubuntu0.1"
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            "binary_name": "proftpd-mod-ldap",
            "binary_version": "1.3.8.b+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-mysql",
            "binary_version": "1.3.8.b+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-odbc",
            "binary_version": "1.3.8.b+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-pgsql",
            "binary_version": "1.3.8.b+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-snmp",
            "binary_version": "1.3.8.b+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-sqlite",
            "binary_version": "1.3.8.b+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-wrap",
            "binary_version": "1.3.8.b+dfsg-1ubuntu0.1"
        }
    ]
}