Low severity3.7NVD Advisory· Published Jun 21, 2018· Updated Jun 17, 2026
CVE-2017-2669
CVE-2017-2669
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
15cpe:2.3:a:dovecot:dovecot:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:dovecot:dovecot:*:*:*:*:*:*:*:*range: >=2.2.26,<=2.2.28
- (no CPE)range: dovecot 2.2.29
- osv-coords12 versionspkg:rpm/suse/dovecot&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1pkg:rpm/suse/dovecot&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2pkg:rpm/suse/dovecot&distro=SUSE%20Linux%20Enterprise%20Server%20for%20Raspberry%20Pi%2012%20SP2pkg:rpm/suse/dovecot&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1pkg:rpm/suse/dovecot&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/dovecot22&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1pkg:rpm/suse/dovecot22&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2pkg:rpm/suse/dovecot22&distro=SUSE%20Linux%20Enterprise%20Server%20for%20Raspberry%20Pi%2012%20SP2pkg:rpm/suse/dovecot22&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1pkg:rpm/suse/dovecot22&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/dovecot22&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP1pkg:rpm/suse/dovecot22&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP2
< 2.2-3.1+ 11 more
- (no CPE)range: < 2.2-3.1
- (no CPE)range: < 2.2-3.1
- (no CPE)range: < 2.2-3.1
- (no CPE)range: < 2.2-3.1
- (no CPE)range: < 2.2-3.1
- (no CPE)range: < 2.2.29.1-11.1
- (no CPE)range: < 2.2.29.1-11.1
- (no CPE)range: < 2.2.29.1-11.1
- (no CPE)range: < 2.2.29.1-11.1
- (no CPE)range: < 2.2.29.1-11.1
- (no CPE)range: < 2.2.29.1-11.1
- (no CPE)range: < 2.2.29.1-11.1
Patches
Vulnerability mechanics
References
6- www.openwall.com/lists/oss-security/2017/04/11/1nvdMailing ListThird Party Advisory
- www.securityfocus.com/bid/97536nvdThird Party AdvisoryVDB Entry
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingThird Party Advisory
- dovecot.org/pipermail/dovecot-news/2017-April/000341.htmlnvdVendor Advisory
- github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735.patchnvdThird Party Advisory
- www.debian.org/security/2017/dsa-3828nvdThird Party Advisory
News mentions
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