Cyrus IMAP Server login Command Remote Overflow

High Nessus Network Monitor Plugin ID 1085


The remote host is vulnerable to a buffer overflow.


According to its banner, the remote Cyrus IMAP server is vulnerable to a pre-login buffer overrun. An attacker without a valid login could exploit this, and would be able to execute arbitrary commands as the owner of the Cyrus process. This would allow full access to all users' mailboxes. More information :


If possible, upgrade to an unaffected version. However, at the time of writing no official fix was available. There is a source patch against 2.1.10 in the Bugtraq report.

See Also

Plugin Details

Severity: High

ID: 1085

File Name: 1085.prm

Family: IMAP Servers

Published: 2004/08/20

Modified: 2016/01/30

Nessus ID: 11196

Risk Information

Risk Factor: High


Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: CVSS2#E:ND/RL:OF/RC:C


Base Score: 7.3

Temporal Score: 6.4


Temporal Vector: CVSS3#E:U/RL:O/RC:C

Reference Information

OSVDB: 55701