Information disclosure in Couchbase Sync Gateway
CVE-2021-43963
An issue was discovered in Couchbase Sync Gateway 2.7.0 through 2.8.2. The bucket credentials used to read and write data in Couchbase Server were insecurely being stored in the metadata within sync documents written to the bucket. Users with read access could use these credentials to obtain write access. (This issue does not affect clusters where Sync Gateway is authenticated with X.509 client certificates. This issue also does not affect clusters where shared bucket access is not enabled on Sync Gateway.)
Vulnerability class: Information Disclosure
EPSS: 0.005 (40.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
Affected products
- Couchbase Sync_gateway
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-43963?
- CVE-2021-43963 is a high-severity vulnerability in Couchbase Sync Gateway, classified under Information Disclosure. CVSS score: 8.1/10. Published 2021-12-07.
- How severe is CVE-2021-43963?
- High severity. CVSS v3 base score is 8.1 out of 10.