CVE - CVE-2017-2669

CVE-ID
CVE-2017-2669	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
BID:97536 URL:http://www.securityfocus.com/bid/97536 CONFIRM:https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2669 CONFIRM:https://github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735.patch DEBIAN:DSA-3828 URL:https://www.debian.org/security/2017/dsa-3828 MLIST:[dovecot-news] 20170410 v2.2.29 released URL:https://dovecot.org/pipermail/dovecot-news/2017-April/000341.html MLIST:[oss-security] 20170411 CVE-2017-2669: Dovecot DoS when passdb dict was used for authentication URL:http://www.openwall.com/lists/oss-security/2017/04/11/1
Assigning CNA
Red Hat, Inc.
Date Record Created
20161201	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20161201)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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