{"containers": {"cna": {"affected": [{"product": "dovecot", "vendor": "[UNKNOWN]", "versions": [{"status": "affected", "version": "dovecot 2.2.29"}]}], "datePublic": "2017-04-10T00:00:00", "descriptions": [{"lang": "en", "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."}], "metrics": [{"cvssV3_0": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 3.7, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.0"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-20", "description": "CWE-20", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2018-06-22T09:57:01", "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat"}, "references": [{"name": "[dovecot-news] 20170410 v2.2.29 released", "tags": ["mailing-list", "x_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", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "http://www.openwall.com/lists/oss-security/2017/04/11/1"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2669"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735.patch"}, {"name": "DSA-3828", "tags": ["vendor-advisory", "x_refsource_DEBIAN"], "url": "https://www.debian.org/security/2017/dsa-3828"}, {"name": "97536", "tags": ["vdb-entry", "x_refsource_BID"], "url": "http://www.securityfocus.com/bid/97536"}], "x_legacyV4Record": {"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"}]}}}}, "cveMetadata": {"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "assignerShortName": "redhat", "cveId": "CVE-2017-2669", "datePublished": "2018-06-21T13:00:00", "dateReserved": "2016-12-01T00:00:00", "dateUpdated": "2018-06-22T09:57:01", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.0"}

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