CVE-2019-9039: SQL Injection
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 "alldocs" 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 alldocs 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.
Other sources
The Couchbase Sync Gateway 2.1.2 in combination with a Couchbase Server is affected by a previously undisclosed N1QL-injection vulnerability in the REST API. An attacker with access to the public REST API can insert additional N1QL statements through the parameters ?startkey? and ?endkey? of the ?alldocs? endpoint.
Affected Software
Event History
Frequently Asked Questions
What is CVE-2019-9039?
CVE-2019-9039 is a vulnerability in Couchbase Sync Gateway 2.1.2 that allows an attacker to issue additional N1QL statements and extract sensitive data or call arbitrary N1QL functions.
How does CVE-2019-9039 affect Couchbase Sync Gateway?
CVE-2019-9039 affects Couchbase Sync Gateway 2.1.2 by allowing an attacker with access to the Sync Gateway's public REST API to issue additional N1QL statements and extract sensitive data or call arbitrary N1QL functions.
What is the severity of CVE-2019-9039?
CVE-2019-9039 has a severity rating of 9.8 (Critical).
How can I fix CVE-2019-9039?
To fix CVE-2019-9039, upgrade to Couchbase Sync Gateway version 2.5.0 or later.
Where can I find more information about CVE-2019-9039?
More information about CVE-2019-9039 can be found at the following references: [Link 1](https://nvd.nist.gov/vuln/detail/CVE-2019-9039), [Link 2](https://github.com/couchbase/sync_gateway/commit/97adb5b496aa96aa70398018ea96da913ffd8d8c), [Link 3](https://docs.couchbase.com/sync-gateway/2.5/release-notes.html).