CVE-2017-16651 in Roundcube and Debian Products
Published on November 9, 2017
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. This vulnerability is known to be actively exploited by threat actors. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
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
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Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.