CVE-2016-9920

Gentoo Linux Security Advisory 201612-44

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

steps/mail/sendmail.inc in Roundcube before 1.1.7 and 1.2.x before 1.2.3, when no SMTP server is configured and the sendmail program is enabled, does not properly restrict the use of custom envelope-from addresses on the sendmail command line, which allows remote authenticated users to execute arbitrary code via a modified HTTP request that sends a crafted e-mail message.

steps/mail/sendmail.inc en Roundcube en versiones anteriores a 1.1.7 y 1.2.x en versiones anteriores a 1.2.3, cuando ningún servidor SMTP está configurado y el programa sendmail está habilitado, no restringe adecuadamente el uso de direcciones personalizadas envelope-from en la línea de comando de sendmail, lo que permite a usuarios remotos autenticados ejecutar código arbitrario a través de una petición HTTP modificada que envía un mensaje de correo electrónico manipulado.

A vulnerability in Roundcube could potentially lead to arbitrary code execution. Versions less than 1.2.3 are affected.

*Credits: N/A

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

Single

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-12-08 CVE Reserved
2016-12-08 CVE Published
2017-01-06 First Exploit
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-284: Improper Access Control

CAPEC

References (6)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2016/12/08/10	Mailing List
http://www.securityfocus.com/bid/94858	Vdb Entry

URL	Date	SRC
https://github.com/t0kx/exploit-CVE-2016-9920	2017-01-06
https://blog.ripstech.com/2016/roundcube-command-execution-via-email	2024-08-06

URL	Date	SRC

URL	Date	SRC
https://roundcube.net/news/2016/11/28/updates-1.2.3-and-1.1.7-released	2017-07-01
https://security.gentoo.org/glsa/201612-44	2017-07-01

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Roundcube Search vendor "Roundcube"		Webmail Search vendor "Roundcube" for product "Webmail"				<= 1.1.6 Search vendor "Roundcube" for product "Webmail" and version " <= 1.1.6"		-		Affected
Roundcube Search vendor "Roundcube"		Webmail Search vendor "Roundcube" for product "Webmail"				1.2.0 Search vendor "Roundcube" for product "Webmail" and version "1.2.0"		-		Affected
Roundcube Search vendor "Roundcube"		Webmail Search vendor "Roundcube" for product "Webmail"				1.2.1 Search vendor "Roundcube" for product "Webmail" and version "1.2.1"		-		Affected
Roundcube Search vendor "Roundcube"		Webmail Search vendor "Roundcube" for product "Webmail"				1.2.2 Search vendor "Roundcube" for product "Webmail" and version "1.2.2"		-		Affected