Sendmail < 8.13.8 Header Processing Overflow DoS

medium Nessus Plugin ID 17724
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.


The remote mail server is susceptible to a denial of service attack.


The remote mail server is running a version of Sendmail earlier than 8.13.8. Such versions are reportedly affected by a use-after-free flaw that may allow an attacker to crash the server.


Upgrade to Sendmail 8.13.8 or later.

See Also

Plugin Details

Severity: Medium

ID: 17724

File Name: sendmail_8_13_8.nasl

Version: 1.8

Type: remote

Published: 11/18/2011

Updated: 9/17/2018

Dependencies: sendmail_detect.nbin

Risk Information

CVSS Score Source: CVE-2006-4434


Risk Factor: Low

Score: 1.4


Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

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


Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:2.3:a:sendmail:sendmail:*:*:*:*:*:*:*:*

Required KB Items: installed_sw/Sendmail

Exploit Ease: No known exploits are available

Patch Publication Date: 8/7/2006

Vulnerability Publication Date: 8/9/2006

Reference Information

CVE: CVE-2006-4434

BID: 19714