Vulnerability identifier: #VU29123

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-4045

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ssb-server
Server applications / Database software
ssb-db
Web applications / Modules and components for CMS

Vendor: Secure Scuttlebutt Consortium

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in the "get()" method. A remote attacker can gain unauthorized access to sensitive information on the system.

Note: This only affects peers who also have private messages, and is only known to be exploitable if you're also running in SSB-Server.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

ssb-server: 16.0.0

ssb-db: 20.0.0

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External links
http://github.com/ssbc/ssb-db/commit/43334d0871c9cc6220e0f6d6338499060f7761d4
http://github.com/ssbc/ssb-db/security/advisories/GHSA-mpgr-2cx9-327h

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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.