Security readout for executives and security teams
This is a denial-of-service issue in older Dovecot mail servers. If specific dict-based authentication backends are enabled, a remote IMAP or POP3 client could send a crafted username that makes authentication consume excessive memory or CPU, causing crashes or authentication hangs. Exposure is limited to Dovecot deployments older than 2.2.29 that use dict passdb and userdb for authentication. Publicly reachable IMAP or POP3 services increase relevance, but the source bundle does not identify affected downstream package versions beyond vendor advisories. Treat this as a low-priority availability risk unless exposed mail servers run vulnerable Dovecot with dict authentication. Patch during normal maintenance, but raise priority for customer-facing mail platforms where authentication outages would disrupt business operations. Mitigation focus: Upgrade Dovecot to version 2.2.29 or a vendor-fixed package.; Review Debian, Red Hat, and Dovecot advisories for package-specific guidance.; Prioritize systems using dict passdb and userdb for authentication..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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Open ATT&CK lookupCVE-2017-2669 mapping review
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Open ATT&CK lookup- Severity
- Low
- CVSS
- 3.7 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
CNA and ADP enrichment extracted from CVE v5
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CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L2.21.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
3.7LowVector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Source materials
- CVE List V5 sourceCVE List V5
- [dovecot-news] 20170410 v2.2.29 releasedCVE reference · mailing-list, x_refsource_MLIST
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2669CVE reference · x_refsource_CONFIRM
- https://github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735.patchCVE reference · x_refsource_CONFIRM
- DSA-3828CVE reference · vendor-advisory, x_refsource_DEBIAN
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.