Server-Side Request Forgery (SSRF) in Bitwarden Server



Published: 2020-07-23 | Updated: 2020-07-30
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-15879
CWE-ID CWE-918
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Bitwarden server
Server applications / Other server solutions

Vendor Bitwarden Inc.

Security Bulletin

This security bulletin contains information about 1 vulnerabilities.

Updated 30.07.2020

Added fixed version.

1) Server-Side Request Forgery (SSRF)

EUVDB-ID: #VU31787

Risk: Medium

CVSSv3.1: 6.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-15879

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

Exploit availability: No

Description

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Bitwarden server: 1.35.1


CPE2.3 External links

http://github.com/bitwarden/server/pull/827

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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