PT-2016-7880 · Roundcube+2 · Roundcube+2

Robin Peraglie · Published 2016-11-30 · Updated 2026-03-30 · CVE-2016-9920

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Roundcube versions prior to 1.1.7 Roundcube versions 1.2.x prior to 1.2.3

Description The issue allows remote authenticated users to execute arbitrary code via a modified HTTP request that sends a crafted e-mail message. This is due to the improper restriction of custom envelope-from addresses on the sendmail command line when no SMTP server is configured and the sendmail program is enabled.

Recommendations For Roundcube versions prior to 1.1.7, update to version 1.1.7 or later. For Roundcube versions 1.2.x prior to 1.2.3, update to version 1.2.3 or later.

Exploit

Fix

Improper Access Control

Weakness Enumeration

CWE-284

Related Identifiers

ALT-PU-2016-2377

CVE-2016-9920

DLA-737-1

MGASA-2016-0430

USN-8132-1

Affected Products

Alt Linux

Roundcube

Ubuntu

References · 28

• 🔥 https://github.com/t0kx/exploit-CVE-2016-9920 · Exploit
• 🔥 https://blog.ripstech.com/2016/roundcube-command-execution-via-email · Exploit
• https://advisories.mageia.org/MGASA-2016-0430.html · Security Note
• https://ubuntu.com/security/CVE-2018-1000071 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-6820 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-8132-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-10740 · Vendor Advisory
• https://roundcube.net/news/2016/11/28/updates-1.2.3-and-1.1.7-released · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-4069 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2016-9920 · Vendor Advisory
• https://osv.dev/vulnerability/USN-8132-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-4068 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2016-9920 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-8114 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2016-9920 · Vendor Advisory