Multiple vulnerabilities in Advantech WebAccess



Risk High
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2019-13558
CVE-2019-13552
CVE-2019-13556
CVE-2019-13550
CWE-ID CWE-94
CWE-77
CWE-121
CWE-285
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Advantech WebAccess
Server applications / SCADA systems

Vendor Advantech Co., Ltd

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Code Injection

EUVDB-ID: #VU21196

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-13558

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation. A remote attacker can send a specially crafted request and execute arbitrary code, filter data or crash the system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Advantech WebAccess: 6.0-2007.06.05 - 8.4.1

CPE2.3 External links

https://ics-cert.us-cert.gov/advisories/icsa-19-260-01


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Command Injection

EUVDB-ID: #VU21200

Risk: High

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-13552

CWE-ID: CWE-77 - Command injection

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a lack of proper validation of user-supplied data. A remote authenticated attacker can delete files on the system and execute arbitrary code.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Advantech WebAccess: 6.0-2007.06.05 - 8.4.1

CPE2.3 External links

https://www.us-cert.gov/ics/advisories/icsa-19-260-01


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Stack-based buffer overflow

EUVDB-ID: #VU21201

Risk: High

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-13556

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a lack of proper validation of the length of user-supplied data. A remote authenticated attacker can trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Advantech WebAccess: 6.0-2007.06.05 - 8.4.1

CPE2.3 External links

https://www.us-cert.gov/ics/advisories/icsa-19-260-01


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Improper Authorization

EUVDB-ID: #VU21202

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-13550

CWE-ID: CWE-285 - Improper Authorization

Exploit availability: No

Description

The vulnerability allows a remote attacker to disclose sensitive information and execute arbitrary code.

The vulnerability exists due to the affected software does not perform or incorrectly performs an authorization check. A remote attacker can cause improper control of generation of code and execute arbitrary code or crash the application.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Advantech WebAccess: 6.0-2007.06.05 - 8.4.1

CPE2.3 External links

https://www.us-cert.gov/ics/advisories/icsa-19-260-01


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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