CVE-2017-2669
Published: 10 April 2017
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.
Priority
Medium
CVSS 3 base score: 7.5
Status
| Package | Release | Status |
|---|---|---|
|
dovecot Launchpad, Ubuntu, Debian |
Upstream |
Needed
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Not vulnerable
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Not vulnerable
(1:2.2.9-1ubuntu2.1)
|
|
|
Patches: Upstream: https://github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735 |
||