Vulnerability Monitor

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CVE-2016-8652

The auth component in Dovecot before 2.2.27, when auth-policy is configured, allows a remote attackers to cause a denial of service (crash) by aborting authentication without setting a username.

Published

2017-02-17T02:59:13.547

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 5.9 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Primary
CWE-20

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	dovecot	dovecot	≤ 2.2.27	Yes

References

http://dovecot.org/pipermail/dovecot-news/2016-December/000333.html Release Notes, Vendor Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2016/12/02/4 Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2016/12/05/12 Mailing List, Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/94639 Third Party Advisory, VDB Entry ([email protected])
http://dovecot.org/pipermail/dovecot-news/2016-December/000333.html Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2016/12/02/4 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2016/12/05/12 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/94639 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)