Intel CSME MEBx Authentication improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Intel CSME, Server Platform Services and Trusted Execution Engine Firmware. Impacted is an unknown function of the component MEBx Authentication. The manipulation leads to improper authentication. This vulnerability is documented as CVE-2018-12192. It is possible to launch the attack on the physical device. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Intel CSME, Server Platform Services and Trusted Execution Engine Firmware (Firmware Software) (affected version unknown). It has been rated as critical. This issue affects an unknown functionality of the component MEBx Authentication. The manipulation with an unknown input leads to a improper authentication vulnerability. Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Logic bug in Kernel subsystem in Intel CSME before version 11.8.60, 11.11.60, 11.22.60 or 12.0.20, or Intel(R) Server Platform Services before version SPS_E5_04.00.04.393.0 may allow an unauthenticated user to potentially bypass MEBx authentication via physical access.

The bug was discovered 03/12/2019. The weakness was released 03/14/2019 (Website). The advisory is shared at intel.com. The identification of this vulnerability is CVE-2018-12192 since 06/11/2018. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k.

Upgrading eliminates this vulnerability.

Entries connected to this vulnerability are available at VDB-131736, VDB-131735, VDB-131737 and VDB-131738. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.8
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: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/11/2018 🔍
03/12/2019 +274 days 🔍
03/14/2019 +2 days 🔍
03/15/2019 +1 days 🔍
05/16/2020 +428 days 🔍

Sourcesinfo

Vendor: intel.com

Advisory: intel.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-12192 (🔍)
GCVE (CVE): GCVE-0-2018-12192
GCVE (VulDB): GCVE-100-131741
See also: 🔍

Entryinfo

Created: 03/15/2019 07:03
Updated: 05/16/2020 17:12
Changes: 03/15/2019 07:03 (57), 05/16/2020 17:12 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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