SQL injection and authentication bypass in Advantech WebAccess
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2017-5154 CVE-2017-5152 |
| CWE-ID | CWE-89 CWE-287 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Advantech WebAccess Server applications / SCADA systems |
| Vendor | Advantech Co., Ltd |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) SQL injection
EUVDB-ID: #VU4565
Risk: Medium
CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-5154
CWE-ID:
CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary SQL commands in web application database.
The vulnerability exists due to insufficient sanitization of user-supplied data passed to updateTemplate.aspx script in Advantech WebAccess. A remote authenticated attacker can send a specially crafted HTTP request to vulnerable script and execute arbitrary SQL commands in web application database.
Successful exploitation of the vulnerability may allow an attacker to gain administrative access to vulnerable web application.
Note: authentication is required to exploit this vulnerability, however another vulnerability, described in this advisory, can be used to bypass authentication process.
Install the latest version 8.2 from vendor's website:
http://www.advantech.com/industrial-automation/webaccess
Advantech WebAccess: 8.1_20160519
External linkshttp://ics-cert.us-cert.gov/advisories/ICSA-17-012-01
http://www.zerodayinitiative.com/advisories/ZDI-17-043/
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) Authentication bypass
EUVDB-ID: #VU4566
Risk: Medium
CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-5152
CWE-ID:
CWE-287 - Improper Authentication
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass authentication.
The vulnerability exists due to incorrectly imposed permissions to specific URL. A remote attacker can use a specially crafted URL to gain unauthorized access to Advantech WebAccess.
Successful exploitation will grant an attacker unauthorized access to web application.
MitigationInstall the latest version 8.2 from vendor's website:
http://www.advantech.com/industrial-automation/webaccess
Advantech WebAccess: 8.1_20160519
External linkshttp://ics-cert.us-cert.gov/advisories/ICSA-17-012-01
http://www.zerodayinitiative.com/advisories/ZDI-17-043/
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.
