Information disclosure in Scuttlebutt Ssb-Db
CVE-2020-4045
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.
Vulnerability class: Information Disclosure
EPSS: 0.013 (67.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Scuttlebutt Ssb-db — versions 20.0.0
- Ssbc Ssb-db — versions = 20.0.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2020-4045?
- CVE-2020-4045 is a high-severity vulnerability in Scuttlebutt Ssb-Db, classified under Information Disclosure. CVSS score: 7.5/10. Published 2020-06-11.
- How severe is CVE-2020-4045?
- High severity. CVSS v3 base score is 7.5 out of 10.