VDB-150425 · CVE-2020-9039 · GCVE-0-2020-9039

Couchbase Server up to 5.x REST Endpoint default permission

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.2	$0-$5k	0.00

Summaryinfo

A vulnerability identified as critical has been detected in Couchbase Server up to 5.x. Affected by this vulnerability is an unknown functionality of the component REST Endpoint. The manipulation leads to default permission. This vulnerability is referenced as CVE-2020-9039. Remote exploitation of the attack is possible. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Couchbase Server up to 5.x. It has been rated as critical. This issue affects some unknown functionality of the component REST Endpoint. The manipulation with an unknown input leads to a default permission vulnerability. Using CWE to declare the problem leads to CWE-276. During installation, installed file permissions are set to allow anyone to modify those files. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Couchbase Server 4.x and 5.x before 6.0.0 has Insecure Permissions for the projector and indexer REST endpoints (they allow unauthenticated access).

The weakness was published 02/22/2020 (Website). The advisory is shared at couchbase.com. The identification of this vulnerability is CVE-2020-9039 since 02/17/2020. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1222 for this issue.

Upgrading to version 6.0.0 eliminates this vulnerability.

Similar entries are available at VDB-156289, VDB-156290 and VDB-156291. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

Couchbase Server

Version

License

free

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Default permission
CWE: CWE-276 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Couchbase Server 6.0.0

Timelineinfo

02/17/2020 🔍
02/22/2020 +5 days 🔍
02/22/2020 +0 days 🔍
02/22/2020 +0 days 🔍

Sourcesinfo

Advisory: couchbase.com
Status: Not defined

CVE: CVE-2020-9039 (🔍)
GCVE (CVE): GCVE-0-2020-9039
GCVE (VulDB): GCVE-100-150425
See also: 🔍

Entryinfo

Created: 02/22/2020 10:41
Updated: 02/22/2020 10:46
Changes: 02/22/2020 10:41 (39), 02/22/2020 10:46 (17)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.