CVE-2023-45660

Require strict cookies for image proxy requests in Nextcloud Mail

Severity Score

4.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

Nextcloud mail is an email app for the Nextcloud home server platform. In affected versions a missing check of origin, target and cookies allows for an attacker to abuse the proxy endpoint to denial of service a third server. It is recommended that the Nextcloud Mail is upgraded to 2.2.8 or 3.3.0. There are no known workarounds for this vulnerability.

Nextcloud mail es una aplicación de correo electrónico para la plataforma de servidor doméstico Nextcloud. En las versiones afectadas, la falta de verificación de origen, destino y cookies permite a un atacante abusar del endpoint del proxy para negar el servicio a un tercer servidor. Se recomienda actualizar Nextcloud Mail a 2.2.8 o 3.3.0. No se conocen workarounds para esta vulnerabilidad.

*Credits: N/A

CVSS Scores

NISTv3.1 4.3

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2023-10-10 CVE Reserved
2023-10-16 CVE Published
2024-09-13 CVE Updated
2024-10-22 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-918: Server-Side Request Forgery (SSRF)

CAPEC

References (3)

URL	Tag	Source
https://hackerone.com/reports/1895874	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://github.com/nextcloud/mail/pull/8459	2023-10-20

URL	Date	SRC
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8j9x-fmww-qr37	2023-10-20

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Nextcloud Search vendor "Nextcloud"		Mail Search vendor "Nextcloud" for product "Mail"				>= 2.2.0 < 2.2.8 Search vendor "Nextcloud" for product "Mail" and version " >= 2.2.0 < 2.2.8"		-		Affected
Nextcloud Search vendor "Nextcloud"		Mail Search vendor "Nextcloud" for product "Mail"				>= 3.0.0 < 3.3.0 Search vendor "Nextcloud" for product "Mail" and version " >= 3.0.0 < 3.3.0"		-		Affected