Advantech WebAccess 8.3.0 Node\AspVBObj.dll VBWinExec command os command injection

Summaryinfo

A vulnerability classified as critical has been found in Advantech WebAccess 8.3.0. Affected is the function VBWinExec in the library Node\AspVBObj.dll. The manipulation of the argument command as part of Parameter leads to os command injection. This vulnerability is traded as CVE-2018-6911. It is possible to initiate the attack remotely. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability was found in Advantech WebAccess 8.3.0 (SCADA Software) and classified as critical. This issue affects the function VBWinExec in the library Node\AspVBObj.dll. The manipulation of the argument command as part of a Parameter leads to a os command injection vulnerability. Using CWE to declare the problem leads to CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The VBWinExec function in Node\AspVBObj.dll in Advantech WebAccess 8.3.0 allows remote attackers to execute arbitrary OS commands via a single argument (aka the command parameter).

The bug was discovered 02/13/2018. The weakness was shared 02/13/2018 as EDB-ID 44031 as not defined exploit (Exploit-DB). The advisory is shared at exploit-db.com. The identification of this vulnerability is CVE-2018-6911 since 02/11/2018. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known. MITRE ATT&CK project uses the attack technique T1202 for this issue.

After immediately, there has been an exploit disclosed. The exploit is available at exploit-db.com. It is declared as proof-of-concept.

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

The vulnerability is also documented in the vulnerability database at Exploit-DB (44031). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• SCADA Software

Vendor

• Advantech

Name

• WebAccess

Version

• 8.3.0

License

• commercial

Website

• Vendor: https://www.advantech.com/

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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Entryinfo

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

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