Vulnerability identifier: #VU41607

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2013-2111

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Dovecot
Server applications / Mail servers

Vendor: Dovecot

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

The IMAP functionality in Dovecot before 2.2.2 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via invalid APPEND parameters.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Dovecot: 2.2 - 2.2.0

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External links
http://secunia.com/advisories/53492
http://www.dovecot.org/list/dovecot-news/2013-May/000255.html
http://www.openwall.com/lists/oss-security/2013/05/24/1
http://www.securitytracker.com/id/1028585

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.