Cross-site scripting in Roundcube Webmail - CVE-2021-44025

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Main Vulnerability Database Vulnerabilities #VU58393

Cross-site scripting in Roundcube Webmail - CVE-2021-44025

Published: November 27, 2021


Vulnerability identifier: #VU58393
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2021-44025
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data while handling an attachment's filename extension when displaying a MIME type warning message. A remote attacker can send a specially crafted email and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.


Affected software

Roundcube Webmail
Gentoo Linux
Fedora
roundcube (Debian package)
roundcubemail
mail-client/roundcube

How to mitigate CVE-2021-44025

Install updates from vendor's website.

Roundcube Webmail - addressed in versions 1.3.17, 1.4.12
roundcube (Debian package) - addressed in versions 1.3.17+dfsg.1-1~deb10u1, 1.4.12+dfsg.1-1~deb11u1
roundcubemail - addressed in versions 1.4.12-1.fc33, 1.4.12-1.fc34
mail-client/roundcube - update to 1.6.11

External References

Related Security Bulletins