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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2017-2669 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.openwall.com/lists/oss-security/2017/04/11/1 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2017/04/11/1 Mailing List  Third Party Advisory 
http://www.securityfocus.com/bid/97536 Third Party Advisory  VDB Entry 
http://www.securityfocus.com/bid/97536 Third Party Advisory  VDB Entry 
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2669 Issue Tracking  Third Party Advisory 
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2669 Issue Tracking  Third Party Advisory 
https://dovecot.org/pipermail/dovecot-news/2017-April/000341.html Vendor Advisory 
https://dovecot.org/pipermail/dovecot-news/2017-April/000341.html Vendor Advisory 
https://github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735.patch Third Party Advisory 
https://github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735.patch Third Party Advisory 
https://www.debian.org/security/2017/dsa-3828 Third Party Advisory 
https://www.debian.org/security/2017/dsa-3828 Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-20 Improper Input Validation cwe source acceptance level NIST   Red Hat, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-2669
NVD Published Date:
06/21/2018
NVD Last Modified:
11/20/2024
Source:
Red Hat, Inc.