Input validation error in Roundcube Webmail - CVE-2019-15237

Vulnerability identifier: #VU113715

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2019-15237

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a spoofing attack.

The vulnerability exists due to insufficient validation of user-supplied input when handling Punycode xn-- domain names. A remote attacker can perform a spoofing attack and disguise the email sender. 

Roundcube Webmail
Gentoo Linux
Ubuntu
roundcube (Ubuntu package)
mail-client/roundcube

Install updates from vendor's website.

Roundcube Webmail - update to 1.3.10
roundcube (Ubuntu package) - addressed in versions 1.2~beta+dfsg.1-0ubuntu1+esm8, 1.3.6+dfsg.1-1ubuntu0.1~esm8, 1.4.3+dfsg.1-1ubuntu0.1~esm8, 1.5.0+dfsg.1-2ubuntu0.1~esm6, 1.6.6+dfsg-2ubuntu0.1+esm3
mail-client/roundcube - update to 1.6.11

• https://github.com/roundcube/roundcubemail/issues/6891

• Input validation error in Roundcube
• Gentoo update for Roundcube
• Ubuntu update for roundcube