Citadel SMTP makeuserkey Function RCPT TO Command Remote Overflow

high Nessus Plugin ID 30123


The remote mail server is prone to a buffer overflow attack.


The remote server is running Citadel, an open source solution for email and collaboration.

According to its version, the installation of Citadel on the remote host uses insufficient bounds-checking in its SMTP service during memory-copy operations when processing input to the RCPT TO command.
An unauthenticated, remote attacker may be able to leverage this issue to cause a stack-based buffer overflow, resulting in a crash of the affected service or even execution of arbitrary code.


Upgrade to Citadel version 7.11 or later.

Plugin Details

Severity: High

ID: 30123

File Name: citadel_smtp_rcpt_overflow.nasl

Version: 1.17

Type: remote

Published: 1/29/2008

Updated: 7/6/2018

Configuration: Enable paranoid mode

Risk Information


Risk Factor: Medium

Score: 6.7


Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

Vulnerability Information

CPE: cpe:/a:citadel:smtp

Required KB Items: Settings/ParanoidReport

Exploit Available: true

Exploit Ease: Exploits are available

Reference Information

CVE: CVE-2008-0394

BID: 27376

CWE: 119