CVE-2017-2669
- State
- Published
- Severity
- 3.7 Low
- Published
- Jun 21, 2018
- Updated
- Aug 5, 2024
- Reserved
- Dec 1, 2016
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.0 | 3.7 Low | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L | redhat |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
dovecot[UNKNOWN] |
|
References
- [dovecot-news] 20170410 v2.2.29 releasedmailing-list
- [oss-security] 20170411 CVE-2017-2669: Dovecot DoS when passdb dict was used for authenticationmailing-list
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2669
- https://github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735.patch
- DSA-3828vendor-advisory
- 97536vdb-entry
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