CVE-2020-4045 Information

Description

SSB-DB version 20.0.0 has an information disclosure vulnerability. The get() method is supposed to only decrypt messages when you explicitly ask it to but there is a bug where it’s decrypting any message that it can. This means that it is returning the decrypted content of private messages which a malicious peer could use to get access to private data. This only affects peers running SSB-DB@20.0.0 who also have private messages and is only known to be exploitable if you’re also running SSB-OOO (default in SSB-Server) which exposes a thin wrapper around get() to anonymous peers. This is fixed in version 20.0.1. Note that users of SSB-Server verion 16.0.0 should upgrade to 16.0.1 to get the fixed version of SSB-DB.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Reference

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

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

7.5