Server-Side Request Forgery (SSRF) in Bitwarden server - CVE-2020-15879
Published: July 23, 2020 / Updated: July 30, 2020
Vulnerability identifier: #VU31787
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:N/SA:N]
CVE-ID: CVE-2020-15879
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 "IsInternal()" function. A remote attacker 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
Bitwarden server
How to mitigate CVE-2020-15879
Install updates from vendor's website.
Bitwarden server - update to 1.36.0