CVE-2017-2669
3.7
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| [UNKNOWN] | dovecot | dovecot 2.2.29 | affected |
Weaknesses
- CWE-20: CWE-20
ADP Enrichment
CVE Program Container
Additional References
- https://dovecot.org/pipermail/dovecot-news/2017-April/000341.html
- http://www.openwall.com/lists/oss-security/2017/04/11/1
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2669
- https://github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735.patch
- https://www.debian.org/security/2017/dsa-3828
- http://www.securityfocus.com/bid/97536
References
- https://dovecot.org/pipermail/dovecot-news/2017-April/000341.html
- http://www.openwall.com/lists/oss-security/2017/04/11/1
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2669
- https://github.com/dovecot/core/commit/000030feb7a30f193197f1aab8a7b04a26b42735.patch
- https://www.debian.org/security/2017/dsa-3828
- http://www.securityfocus.com/bid/97536
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