Exim < 4.44 Illegal IPv6 Address / SPA Authentication Buffer Overflow

High Nessus Network Monitor Plugin ID 2505


The remote host is vulnerable to a buffer overflow.


The remote host is running Exim, a message transfer agent (SMTP). It is reported that Exim is prone to an IPv6 address and a SPA authentication buffer overflow . An attacker exploiting those flaws may be able to execute arbitrary code on the remote host. Exim must be configured with SPA Authentication or with IPv6 support to exploit those flaws.


Upgrade to version 4.44 or higher.

Plugin Details

Severity: High

ID: 2505

Family: SMTP Servers

Published: 2004/08/18

Modified: 2018/09/16

Dependencies: 2004, 2005

Risk Information

Risk Factor: High


Base Score: 7.6

Temporal Score: 5.6

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

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


Base Score: 8.1

Temporal Score: 7


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

Vulnerability Information

CPE: cpe:/a:university_of_cambridge:exim

Reference Information

CVE: CVE-2005-0022

BID: 12185, 12188