9.1
CRITICAL
CVE-2019-11496
Couchbase Server Unauthenticated Access Vulnerability
Description

In versions of Couchbase Server prior to 5.0, the bucket named "default" was a special bucket that allowed read and write access without authentication. As part of 5.0, the behavior of all buckets including "default" were changed to only allow access by authenticated users with sufficient authorization. However, users were allowed unauthenticated and unauthorized access to the "default" bucket if the properties of this bucket were edited. This has been fixed in versions 5.1.0 and 5.5.0.

INFO

Published Date :

Sept. 10, 2019, 6:15 p.m.

Last Modified :

Aug. 24, 2020, 5:37 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.2

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2019-11496 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Couchbase couchbase_server
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2019-11496.

URL Resource
https://www.couchbase.com/resources/security#SecurityAlerts Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2019-11496 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2019-11496 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CWE Remap by [email protected]

    Aug. 24, 2020

    Action Type Old Value New Value
    Changed CWE CWE-287 CWE-306
  • Initial Analysis by [email protected]

    Sep. 11, 2019

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
    Changed Reference Type https://www.couchbase.com/resources/security#SecurityAlerts No Types Assigned https://www.couchbase.com/resources/security#SecurityAlerts Vendor Advisory
    Added CWE CWE-287
    Added CPE Configuration OR *cpe:2.3:a:couchbase:couchbase_server:*:*:*:*:*:*:*:* versions up to (including) 5.0.0
  • CPE Deprecation Remap by [email protected]

    Sep. 11, 2019

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:couchbase:server:*:*:*:*:*:*:*:* versions from (including) 5.0.0 OR *cpe:2.3:a:couchbase:couchbase_server:*:*:*:*:*:*:*:* versions from (including) 5.0.0
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2019-11496 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.17 }} 0.00%

score

0.51986

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability