Dovecot APPEND command denial of service

dovecot-append-dos (24709) The risk level is classified as LowLow Risk

Description:

Dovecot is vulnerable to a denial of service attack. A remote attacker could exploit this vulnerability by sending a specially-crafted APPEND command to cause the server to crash.

Platforms Affected:

  • Dovecot, Dovecot prior to 1.0 beta3

Remedy:

Upgrade to the latest version of Dovecot (1.0 beta 3 or later), available from the Dovecot Web site. See References.

Consequences:

Denial of Service

References:

  • Dovecot Mailing List, Wed Feb 8 12:22:06 EET 2006, [Dovecot] 1.0beta3 released at http://www.dovecot.org/list/dovecot/2006-February/011367.html.
  • Dovecot Web site, Download at http://www.dovecot.org/download.html.
  • BID-16672: Dovecot Double Free Denial of Service Vulnerability
  • CVE-2006-0730: Multiple unspecified vulnerabilities in Dovecot before 1.0beta3 allow remote attackers to cause a denial of service (application crash or hang) via unspecified vectors involving (1) potential hangs in the APPEND command and potential crashes in (2) dovecot-auth and (3) imap/pop3-login. NOTE: vector 2 might be related to a double free vulnerability.
  • SA18870: Dovecot "imap/pop3-login" Denial of Service Vulnerability
  • VUPEN/ADV-2006-0549: Dovecot Multiple Command Handling Remote Denial of Service Issues

Reported:

Feb 13, 2006

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