CVE-2020-1955

Description

CouchDB version 3.0.0 shipped with a new configuration setting that governs access control to the entire database server called `require_valid_user_except_for_up`. It was meant as an extension to the long standing setting `require_valid_user`, which in turn requires that any and all requests to CouchDB will have to be made with valid credentials, effectively forbidding any anonymous requests. The new `require_valid_user_except_for_up` is an off-by-default setting that was meant to allow requiring valid credentials for all endpoints except for the `/_up` endpoint. However, the implementation of this made an error that lead to not enforcing credentials on any endpoint, when enabled. CouchDB versions 3.0.1[1] and 3.1.0[2] fix this issue.

How to fix CVE-2020-1955

To remediate CVE-2020-1955, upgrade the affected package to a fixed version below.

• —upgrade to 3.0.1 or later

Is CVE-2020-1955 being exploited?

Low — EPSS is 1.9%, meaning exploitation activity has not been observed at scale.

Affected packages (1)

• >= 3.0.0, < 3.0.1

CVSS scores

References (2)

• WEBdocs.couchdb.org/en/master/cve/2020-1955.html
• WEBnvd.nist.gov/vuln/detail/CVE-2020-1955