Server-Side Request Forgery (SSRF) in Nextcloud Mail - CVE-2023-33184
Published: May 29, 2023
Vulnerability identifier: #VU76586
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N]
CVE-ID: CVE-2023-33184
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The disclosed vulnerability allows a remote attacker to perform SSRF attacks.
The vulnerability exists due to insufficient validation of user-supplied input in the Mail app on avatar endpoint. A remote user can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.
Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.
Affected software
Nextcloud Mail
How to mitigate CVE-2023-33184
Install updates from vendor's website.
Nextcloud Mail - addressed in versions 1.15.3, 2.2.5, 3.0.2