CVE-2023-5631

Roundcube Webmail Persistent Cross-Site Scripting (XSS) Vulnerability

Severity Score

5.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

Yes

*KEV

Decision

Act

*SSVC

Descriptions

Roundcube before 1.4.15, 1.5.x before 1.5.5, and 1.6.x before 1.6.4 allows stored XSS via an HTML e-mail message with a crafted SVG document because of program/lib/Roundcube/rcube_washtml.php behavior. This could allow a remote attacker to load arbitrary JavaScript code.

Roundcube anterior a 1.4.15, 1.5.x anterior a 1.5.5 y 1.6.x anterior a 1.6.4 permiten almacenar XSS a través de un mensaje de correo electrónico HTML con un documento SVG manipulado debido al comportamiento de program/lib/Roundcube/rcube_washtml.php. Esto podría permitir que un atacante remoto cargue código JavaScript arbitrario.

Matthieu Faou and Denys Klymenko discovered that Roundcube incorrectly handled certain SVG images. A remote attacker could possibly use this issue to load arbitrary JavaScript code. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu 23.10. Rene Rehme discovered that Roundcube incorrectly handled certain headers. A remote attacker could possibly use this issue to load arbitrary JavaScript code. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu 23.10.

Roundcube Webmail contains a persistent cross-site scripting (XSS) vulnerability that allows a remote attacker to run malicious JavaScript code.

*Credits: Matthieu Faou, Denys Klymenko, Aleksander Machniak

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Act

Exploitation

Active

Automatable

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2023-10-18 CVE Reserved
2023-10-18 CVE Published
2023-10-26 Exploited in Wild
2023-11-16 KEV Due Date
2024-04-05 First Exploit
2025-02-13 CVE Updated
2025-03-30 EPSS Updated

CWE

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CAPEC

CAPEC-592: Stored XSS

References (16)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2023/11/01/1	Mailing List
http://www.openwall.com/lists/oss-security/2023/11/01/3	Mailing List
http://www.openwall.com/lists/oss-security/2023/11/17/2	Mailing List
https://github.com/roundcube/roundcubemail/releases/tag/1.4.15	Release Notes
https://github.com/roundcube/roundcubemail/releases/tag/1.5.5	Release Notes
https://github.com/roundcube/roundcubemail/releases/tag/1.6.4	Release Notes
https://lists.debian.org/debian-lts-announce/2023/10/msg00035.html	Mailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LK67Q46OIEGJCRQUBHKLH3IIJTBNGGX4	Mailing List
https://roundcube.net/news/2023/10/16/security-update-1.6.4-released	Release Notes
https://roundcube.net/news/2023/10/16/security-updates-1.5.5-and-1.4.15	Release Notes
https://www.debian.org/security/2023/dsa-5531	Third Party Advisory

URL	Date	SRC
https://github.com/soreta2/CVE-2023-5631-POC	2024-04-05
https://github.com/roundcube/roundcubemail/issues/9168	2025-02-13

URL	Date	SRC
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1054079	2023-12-22
https://github.com/roundcube/roundcubemail/commit/41756cc3331b495cc0b71886984474dc529dd31d	2023-12-22
https://github.com/roundcube/roundcubemail/commit/6ee6e7ae301e165e2b2cb703edf75552e5376613	2023-12-22

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Roundcube Search vendor "Roundcube"		Webmail Search vendor "Roundcube" for product "Webmail"				< 1.4.15 Search vendor "Roundcube" for product "Webmail" and version " < 1.4.15"		-		Affected
Roundcube Search vendor "Roundcube"		Webmail Search vendor "Roundcube" for product "Webmail"				>= 1.5.0 < 1.5.5 Search vendor "Roundcube" for product "Webmail" and version " >= 1.5.0 < 1.5.5"		-		Affected
Roundcube Search vendor "Roundcube"		Webmail Search vendor "Roundcube" for product "Webmail"				>= 1.6.0 < 1.6.4 Search vendor "Roundcube" for product "Webmail" and version " >= 1.6.0 < 1.6.4"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				11.0 Search vendor "Debian" for product "Debian Linux" and version "11.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				12.0 Search vendor "Debian" for product "Debian Linux" and version "12.0"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				39 Search vendor "Fedoraproject" for product "Fedora" and version "39"		-		Affected