Path traversal in Roundcube Webmail - CVE-2020-12640

Vulnerability identifier: #VU28981

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-2020-12640

CWE-ID: CWE-22

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote user to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences passed via the plugin name to rcube_plugin_api.php. A remote user can send a specially crafted HTTP request and read arbitrary files on the system.

Roundcube Webmail
Gentoo Linux
SUSE Linux
Opensuse
Ubuntu
roundcube (Ubuntu package)
roundcube-core (Ubuntu package)

Install update from vendor's website.

Roundcube Webmail - addressed in versions 1.2.10, 1.3.11, 1.4.4
roundcube (Ubuntu package) - addressed in versions 1.2~beta+dfsg.1-0ubuntu1+esm2, 1.3.6+dfsg.1-1ubuntu0.1~esm2, 1.4.3+dfsg.1-1ubuntu0.1~esm2, 1.5.0+dfsg.1-2ubuntu0.1~esm1
roundcube-core (Ubuntu package) - addressed in versions 1.2~beta+dfsg.1-0ubuntu1+esm2, 1.3.6+dfsg.1-1ubuntu0.1~esm2, 1.4.3+dfsg.1-1ubuntu0.1~esm2, 1.5.0+dfsg.1-2ubuntu0.1~esm1

• https://github.com/roundcube/roundcubemail/commit/814eadb699e8576ce3a78f21e95bf69a7c7b3794
• https://github.com/roundcube/roundcubemail/compare/1.4.3...1.4.4
• https://github.com/roundcube/roundcubemail/releases/tag/1.4.4
• https://roundcube.net/news/2020/04/29/security-updates-1.4.4-1.3.11-and-1.2.10

• Multiple vulnerabilities in Roundcube Webmail
• Gentoo update for Roundcube
• OpenSUSE Linux update for roundcubemail
• Ubuntu update for roundcube