CVE-2016-9920 Information

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.

CVSS Vector

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

Reference

http://www.openwall.com/lists/oss-security/2016/12/08/10 http://www.securityfocus.com/bid/94858 https://blog.ripstech.com/2016/roundcube-command-execution-via-email/ https://roundcube.net/news/2016/11/28/updates-1.2.3-and-1.1.7-released https://security.gentoo.org/glsa/201612-44

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.5