7.5
HIGH
CVE-2016-9920
Roundcube Sendmail Envelope-From Code Execution Vulnerability
Description

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.

INFO

Published Date :

Dec. 8, 2016, 6:59 p.m.

Last Modified :

July 1, 2017, 1:30 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

1.6
Public PoC/Exploit Available at Github

CVE-2016-9920 has a 3 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2016-9920 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Roundcube webmail
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2016-9920.

URL Resource
http://www.openwall.com/lists/oss-security/2016/12/08/10 Mailing List Third Party Advisory
http://www.securityfocus.com/bid/94858
https://blog.ripstech.com/2016/roundcube-command-execution-via-email/ Exploit Third Party Advisory
https://roundcube.net/news/2016/11/28/updates-1.2.3-and-1.1.7-released Release Notes Vendor Advisory
https://security.gentoo.org/glsa/201612-44

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

None

Updated: 2 months ago
17 stars 5 fork 5 watcher
Born at : July 28, 2022, 3:22 a.m. This repo has been linked 149 different CVEs too.

None

Updated: 3 years, 9 months ago
0 stars 1 fork 1 watcher
Born at : Feb. 6, 2021, 4:29 p.m. This repo has been linked 33 different CVEs too.

Roundcube 1.0.0 <= 1.2.2 Remote Code Execution exploit and vulnerable container

roundcube docker vulnerable-container exploit cve-2016-9920 rce

Python PHP Shell

Updated: 2 months, 4 weeks ago
43 stars 20 fork 20 watcher
Born at : Jan. 6, 2017, 5:55 p.m. This repo has been linked 1 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2016-9920 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2016-9920 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Jul. 01, 2017

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/201612-44 [No Types Assigned]
  • CVE Modified by [email protected]

    Dec. 15, 2016

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/94858 [No Types Assigned]
  • Initial Analysis by [email protected]

    Dec. 09, 2016

    Action Type Old Value New Value
    Added CPE Configuration Configuration 1 OR *cpe:2.3:a:roundcube:webmail:1.1.6:*:*:*:*:*:*:* (and previous) *cpe:2.3:a:roundcube:webmail:1.2.1:*:*:*:*:*:*:* *cpe:2.3:a:roundcube:webmail:1.2.2:*:*:*:*:*:*:* *cpe:2.3:a:roundcube:webmail:1.2.0:*:*:*:*:*:*:*
    Added CVSS V2 (AV:N/AC:M/Au:S/C:P/I:P/A:P)
    Added CVSS V3 AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://roundcube.net/news/2016/11/28/updates-1.2.3-and-1.1.7-released No Types Assigned https://roundcube.net/news/2016/11/28/updates-1.2.3-and-1.1.7-released Release Notes, Vendor Advisory
    Changed Reference Type http://www.openwall.com/lists/oss-security/2016/12/08/10 No Types Assigned http://www.openwall.com/lists/oss-security/2016/12/08/10 Third Party Advisory, Mailing List
    Changed Reference Type https://blog.ripstech.com/2016/roundcube-command-execution-via-email/ No Types Assigned https://blog.ripstech.com/2016/roundcube-command-execution-via-email/ Third Party Advisory, Exploit
    Added CWE CWE-284
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2016-9920 is associated with the following CWEs:

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.68 }} -0.06%

score

0.80233

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability