CVE-2017-2669

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Summary

CVECVE-2017-2669
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2018-06-21 13:29:00 UTC
Updated2019-10-09 23:27:00 UTC
DescriptionDovecot 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.

Risk And Classification

Problem Types: CWE-20

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 8.0 All All All
Operating System Debian Debian Linux 8.0 All All All
Application Dovecot Dovecot All All All All

References

ReferenceSourceLinkTags
Dovecot CVE-2017-2669 Denial of Service Vulnerability BID www.securityfocus.com Third Party Advisory, VDB Entry
Debian -- Security Information -- DSA-3828-1 dovecot DEBIAN www.debian.org Third Party Advisory
github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735.... CONFIRM github.com Third Party Advisory
1438676 – (CVE-2017-2669) CVE-2017-2669 dovecot: Dovecot DoS when passdb dict was used for authentication CONFIRM bugzilla.redhat.com Issue Tracking, Third Party Advisory
oss-security - CVE-2017-2669: Dovecot DoS when passdb dict was used for authentication MLIST www.openwall.com Mailing List, Third Party Advisory
[Dovecot-news] v2.2.29 released MLIST dovecot.org Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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