{
    "CVE_data_meta": {
        "ASSIGNER": "secalert@redhat.com",
        "ID": "CVE-2017-2669",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "dovecot",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "dovecot 2.2.29"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "[UNKNOWN]"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "Dovecot before version 2.2.29 is vulnerable to a denial of service. When 'dict' passdb and userdb were used for user authentication, the username sent by the IMAP/POP3 client was sent through var_expand() to perform %variable expansion. Sending specially crafted %variable fields could result in excessive memory usage causing the process to crash (and restart), or excessive CPU usage causing all authentications to hang."
            }
        ]
    },
    "impact": {
        "cvss": [
            [
                {
                    "vectorString": "3.7/CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
                    "version": "3.0"
                }
            ]
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-20"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "[dovecot-news] 20170410 v2.2.29 released",
                "refsource": "MLIST",
                "url": "https://dovecot.org/pipermail/dovecot-news/2017-April/000341.html"
            },
            {
                "name": "[oss-security] 20170411 CVE-2017-2669: Dovecot DoS when passdb dict was used for authentication",
                "refsource": "MLIST",
                "url": "http://www.openwall.com/lists/oss-security/2017/04/11/1"
            },
            {
                "name": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2669",
                "refsource": "CONFIRM",
                "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2669"
            },
            {
                "name": "https://github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735.patch",
                "refsource": "CONFIRM",
                "url": "https://github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735.patch"
            },
            {
                "name": "DSA-3828",
                "refsource": "DEBIAN",
                "url": "https://www.debian.org/security/2017/dsa-3828"
            },
            {
                "name": "97536",
                "refsource": "BID",
                "url": "http://www.securityfocus.com/bid/97536"
            }
        ]
    }
}