Supermicro X11S/X10/X9/X8SI/K1SP/C9X299/C7/B1/A2/A1 Firmware access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Supermicro X11S, X10, X9, X8SI, K1SP, C9X299, C7, B1, A2 and A1. It has been classified as critical. This vulnerability affects unknown code of the component Firmware Handler. This manipulation causes access control. This vulnerability is tracked as CVE-2018-13787. The attack is restricted to local execution. No exploit exists.

Detailsinfo

A vulnerability has been found in Supermicro X11S, X10, X9, X8SI, K1SP, C9X299, C7, B1, A2 and A1 and classified as critical. Affected by this vulnerability is an unknown code block of the component Firmware Handler. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Certain Supermicro X11S, X10, X9, X8SI, K1SP, C9X299, C7, B1, A2, and A1 products have a misconfigured Descriptor Region, allowing OS programs to modify firmware.

The bug was discovered 07/07/2018. The weakness was disclosed 07/09/2018 (Website). The advisory is shared at blog.eclypsium.com. This vulnerability is known as CVE-2018-13787 since 07/09/2018. The exploitation appears to be easy. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

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.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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

Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 4.2
VulDB Temp Score: 4.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.7
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: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/07/2018 🔍
07/09/2018 +1 days 🔍
07/09/2018 +0 days 🔍
07/09/2018 +0 days 🔍
07/10/2018 +1 days 🔍
03/03/2020 +602 days 🔍

Sourcesinfo

Advisory: blog.eclypsium.com
Status: Not defined

CVE: CVE-2018-13787 (🔍)
GCVE (CVE): GCVE-0-2018-13787
GCVE (VulDB): GCVE-100-120937

Entryinfo

Created: 07/10/2018 09:58
Updated: 03/03/2020 14:17
Changes: 07/10/2018 09:58 (55), 03/03/2020 14:17 (1)
Complete: 🔍
Cache ID: 216::103

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

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