CVE-2019-9039
In Couchbase Sync Gateway 2.1.2, an attacker with access to the Sync Gateway’s public REST API was able to issue additional N1QL statements and extract sensitive data or call arbitrary N1QL functions through the parameters "startkey" and "endkey" on the…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.74%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In Couchbase Sync Gateway 2.1.2, an attacker with access to the Sync Gateway’s public REST API was able to issue additional N1QL statements and extract sensitive data or call arbitrary N1QL functions through the parameters "startkey" and "endkey" on the "_all_docs" endpoint. By issuing nested queries with CPU-intensive operations they may have been able to cause increased resource usage and denial of service conditions. The _all_docs endpoint is not required for Couchbase Mobile replication and external access to this REST endpoint has been blocked to mitigate this issue. This issue has been fixed in versions 2.5.0 and 2.1.3.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.74% probability · 85th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-89
- Affected
- couchbase/sync gateway
- Source
- cve@mitre.org
References
- https://docs.couchbase.com/sync-gateway/2.5/release-notes.htmlRelease Notes, Vendor Advisory
- https://research.hisolutions.com/2019/06/n1ql-injection-in-couchbase-sync-gateway-cve-2019-9039/Exploit, Third Party Advisory
- https://www.couchbase.com/resources/security#SecurityAlerts
- https://docs.couchbase.com/sync-gateway/2.5/release-notes.htmlRelease Notes, Vendor Advisory
- https://research.hisolutions.com/2019/06/n1ql-injection-in-couchbase-sync-gateway-cve-2019-9039/Exploit, Third Party Advisory
- https://www.couchbase.com/resources/security#SecurityAlerts
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.