nginx < 1.6.1 / 1.7.4 SMTP STARTTLS Command Injection

medium Nessus Plugin ID 77246

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Synopsis

The remote web server is affected by a command injection vulnerability.

Description

According to the self-reported version in the server response header, the version of nginx installed on the remote host is 1.5.6 or higher, 1.6.x prior to 1.6.1, or 1.7.x prior to 1.7.4. It is, therefore, affected by a command injection vulnerability.

A flaw exists in the function 'ngx_mail_smtp_starttls' within the file 'src/mail/ngx_mail_smtp_handler.c' whereby input to the STARTTLS command is not properly sanitized. This could allow a remote attacker in a privileged network position to obtain sensitive information by injecting commands into an SSL session.

Note that this issue is exploitable only when nginx is used as an SMTP proxy.

Solution

Apply the patch manually, or upgrade to nginx 1.6.1 / 1.7.4 or later.

Plugin Details

Severity: Medium

ID: 77246

File Name: nginx_1_7_4.nasl

Version: 1.13

Type: combined

Agent: unix

Family: Web Servers

Published: 8/19/2014

Updated: 4/11/2022

Configuration: Enable thorough checks

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.5

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

CVSS Score Source: CVE-2014-3556

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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

Vulnerability Information

CPE: cpe:/a:nginx:nginx

Required KB Items: installed_sw/nginx

Exploit Ease: No known exploits are available

Patch Publication Date: 8/5/2014

Vulnerability Publication Date: 8/5/2014

Reference Information

CVE: CVE-2014-3556

BID: 69111

Detections

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