Vulnerability · Published Jun 11, 2020 · Assigned by GitHub_M

CVE-2020-4045Information disclosure in SSB-DB

High 7.5

In plain English

A high-severity information exposure in SSB-DB from ssbc. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 70% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)1.3%top 29.8% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	ssb-db	20.0.1	GHSA-mpgr-2cx9-327h

Affected products (as reported)

Vendor	Product	Versions
ssbc	SSB-DB	= 20.0.0

Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

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