Advantech WebAccess/SCADA 9.0.1 Loaded Module access control

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CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.8$0-$5k0.00

A vulnerability was found in Advantech WebAccess and SCADA 9.0.1 (SCADA Software) and classified as critical. This issue affects some unknown functionality of the component Loaded Module Handler. The manipulation with an unknown input leads to a privilege escalation vulnerability. Using CWE to declare the problem leads to CWE-284. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An exploitable local privilege elevation vulnerability exists in the file system permissions of Advantech WebAccess/SCADA 9.0.1 installation. In webvrpcs Run Key Privilege Escalation in installation folder of WebAccess, an attacker can either replace binary or loaded modules to execute code with NT SYSTEM privilege.

The weakness was presented 02/18/2021 as TALOS-2020-1169. It is possible to read the advisory at talosintelligence.com. The identification of this vulnerability is CVE-2020-13553 since 05/26/2020. The exploitation is known to be easy. The attack may be initiated remotely. A simple authentication is required for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/03/2021). The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

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

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VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.8

VulDB Base Score: 8.8
VulDB Temp Score: 8.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔒

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VulDB Base Score: 🔒
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VulDB Reliability: 🔍

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Exploitinginfoedit

Class: Privilege escalation
CWE: CWE-284
ATT&CK: T1068

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Countermeasuresinfoedit

Recommended: no mitigation known
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0-Day Time: 🔒

Timelineinfoedit

05/26/2020 CVE assigned
02/18/2021 +268 days Advisory disclosed
02/18/2021 +0 days VulDB entry created
03/03/2021 +13 days VulDB last update

Sourcesinfoedit

Vendor: https://www.advantech.com/

Advisory: TALOS-2020-1169
Status: Not defined

CVE: CVE-2020-13553 (🔒)

Entryinfoedit

Created: 02/18/2021 07:35 AM
Updated: 03/03/2021 08:47 AM
Changes: (16) vulnerability_cvss3_nvd_av vulnerability_cvss3_nvd_ac vulnerability_cvss3_nvd_pr vulnerability_cvss3_nvd_ui vulnerability_cvss3_nvd_s vulnerability_cvss3_nvd_c vulnerability_cvss3_nvd_i vulnerability_cvss3_nvd_a vulnerability_cvss2_nvd_av vulnerability_cvss2_nvd_ac vulnerability_cvss2_nvd_au vulnerability_cvss2_nvd_ci vulnerability_cvss2_nvd_ii vulnerability_cvss2_nvd_ai vulnerability_cvss2_nvd_basescore vulnerability_cvss3_nvd_basescore
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