Information disclosure in Roundcube Webmail - CVE-2017-16651

Vulnerability identifier: #VU9172

CSH Severity: Medium

CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2017-16651

CWE-ID: CWE-200

Exploitation vector: Remote access

Exploit availability: The vulnerability is being exploited in the wild

The vulnerability allows a remote authenticated attacker to obtain potentially sensitive information on the target system.

The weakness exists due to insufficient validation of file-based attachment plugins and _task=settings&_action=upload-display&_from=timezone requests. A remote attacker can modify the login form and submit it with valid credentials (username/password) of an email account, send a specially crafted HTTP request and gain unauthorized access to arbitrary files on the host's filesystem, including configuration files of Roundcube.

Note: the vulnerability is being actively exploited.

Roundcube Webmail
Arch Linux
Debian Linux
Fedora
Ubuntu
roundcubemail (Alpine package)
roundcube-core (Ubuntu package)
roundcube-plugins (Ubuntu package)
roundcubemail

Install update from vendor's website (1.1.10, 1.2.7, 1.3.3).

roundcubemail (Alpine package) - update to 1.1.10-r0
roundcube-core (Ubuntu package) - update to Ubuntu Pro
roundcube-plugins (Ubuntu package) - update to Ubuntu Pro
roundcubemail - addressed in versions 1.0.12-1.el6, 1.1.10-1.el7, 1.3.3-1.fc26, 1.3.3-1.fc27

• Exploit #9295 - Roundcube TimeZone Authenticated File Disclosure (September 6, 2023)
• Exploit #5112 - Roundcube Webmail 1.2 - File Disclosure (February 3, 2021)

• https://roundcube.net/news/2017/11/08/security-updates-1.3.3-1.2.7-and-1.1.10

• Information disclosure in Roundcube
• Debian update for roundcube
• Arch Linux update for roundcubemail
• Information disclosure in roundcubemail (Alpine package)
• Ubuntu update for roundcube
• Fedora 26 update for roundcubemail
• Fedora 27 update for roundcubemail
• Fedora EPEL 7 update for roundcubemail
• Fedora EPEL 6 update for roundcubemail