Elastic X-Pack Security up to 5.4.0 run_as privileges management

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Elastic X-Pack Security up to 5.4.0. It has been classified as critical. Impacted is an unknown function of the component run_as. This manipulation causes privilege escalation. This vulnerability appears as CVE-2017-8438. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical was found in Elastic X-Pack Security up to 5.4.0. Affected by this vulnerability is an unknown code block of the component run_as. The manipulation with an unknown input leads to a privilege escalation vulnerability. The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Elastic X-Pack Security versions 5.0.0 to 5.4.0 contain a privilege escalation bug in the run_as functionality. This bug prevents transitioning into the specified user specified in a run_as request. If a role has been created using a template that contains the _user properties, the behavior of run_as will be incorrect. Additionally if the run_as user specified does not exist, the transition will not happen.

The bug was discovered 06/01/2017. The weakness was presented 06/05/2017 (Website). The advisory is shared at discuss.elastic.co. This vulnerability is known as CVE-2017-8438. The exploitation appears to be easy. The attack can be launched remotely. The requirement for exploitation is a single authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 112038 (Elasticsearch ESA-2017-06), which helps to determine the existence of the flaw in a target environment. It is running in the context r.

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (112038). See VDB-101954, VDB-101955 and VDB-101956 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 112038
Nessus Name: Elasticsearch ESA-2017-06
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 103369
OpenVAS Name: Elasticsearch Kibana X-Pack CVE-2017-8438 Privilege Escalation Vulnerability (Windows)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/02/2017 🔍
06/01/2017 +17084 days 🔍
06/01/2017 +0 days 🔍
06/05/2017 +4 days 🔍
06/05/2017 +0 days 🔍
06/05/2017 +0 days 🔍
08/22/2018 +443 days 🔍
10/13/2019 +417 days 🔍

Sourcesinfo

Advisory: discuss.elastic.co
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-8438 (🔍)
GCVE (CVE): GCVE-0-2017-8438
GCVE (VulDB): GCVE-100-101953
See also: 🔍

Entryinfo

Created: 06/05/2017 20:53
Updated: 10/13/2019 16:44
Changes: 06/05/2017 20:53 (67), 10/13/2019 16:44 (4)
Complete: 🔍
Cache ID: 216:7AD:103

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

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