SB2023052909 - Server-Side Request Forgery (SSRF) in Nextcloud Mail
Published: May 29, 2023
Security Bulletin ID
SB2023052909
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Server-Side Request Forgery (SSRF) (CVE-ID: CVE-2023-33184)
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.
Remediation
Install update from vendor's website.