roundcube webmail CVE-2017-16651 in Roundcube and Debian Products
Published on November 9, 2017

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Roundcube Webmail before 1.1.10, 1.2.x before 1.2.7, and 1.3.x before 1.3.3 allows unauthorized access to arbitrary files on the host's filesystem, including configuration files, as exploited in the wild in November 2017. The attacker must be able to authenticate at the target system with a valid username/password as the attack requires an active session. The issue is related to file-based attachment plugins and _task=settings&_action=upload-display&_from=timezone requests.

Vendor Advisory NVD

Known Exploited Vulnerability

This Roundcube Webmail File Disclosure Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Allows unauthorized access to arbitrary files on the host's filesystem, including configuration files. The issue is related to file-based attachment plugins and _task=settings&_action=upload-display&_from=timezone requests.

The following remediation steps are recommended / required by May 3, 2022: Apply updates per vendor instructions.

Vulnerability Analysis

CVE-2017-16651 can be exploited with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. It has an exploitability score of 1.8 out of four. The potential impact of an exploit of this vulnerability is considered to be very high.

Files or Directories Accessible to External Parties

The product makes files or directories accessible to unauthorized actors, even though they should not be. Web servers, FTP servers, and similar servers may store a set of files underneath a "root" directory that is accessible to the server's users. Applications may store sensitive files underneath this root without also using access control to limit which users may request those files, if any. Alternately, an application might package multiple files or directories into an archive file (e.g., ZIP or tar), but the application might not exclude sensitive files that are underneath those directories.


Products Associated with CVE-2017-16651

You can be notified by stack.watch whenever vulnerabilities like CVE-2017-16651 are published in these products:

Roundcube Webmail
 
Debian Linux
 

What versions are vulnerable to CVE-2017-16651?