Multiple vulnerabilities in QNAP QTS
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2018-19949 CVE-2018-19953 CVE-2018-19943 |
| CWE-ID | CWE-77 CWE-79 |
| Exploitation vector | Network |
| Public exploit |
Vulnerability #1 is being exploited in the wild. Vulnerability #2 is being exploited in the wild. Vulnerability #3 is being exploited in the wild. |
| Vulnerable software Subscribe |
QNAP QTS Server applications / File servers (FTP/HTTP) |
| Vendor | QNAP Systems, Inc. |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Command Injection
EUVDB-ID: #VU28777
Risk: Low
CVSSv3.1: 6.9 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]
CVE-ID: CVE-2018-19949
CWE-ID:
CWE-77 - Command injection
Exploit availability: No
DescriptionThe vulnerability allows a remote user to execute arbitrary commands on the system.
The vulnerability exists due to insufficient input validation in username on proper authentication after account creation. A remote administrator can create users with usernames containing bash syntax that evaluates code and execute arbitrary commands on the system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsQNAP QTS: 4.4.1.0948 20190527 - 4.4.1.1201 20200130
External linkshttp://www.qnap.com/en/release-notes/qts/4.4.1.1216/20200214
http://blog.securityevaluators.com/multiple-vulnerabilities-discovered-in-qnap-nass-303b720d487b
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated privileged 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?
Yes. This vulnerability is being exploited in the wild.
2) Stored cross-site scripting
EUVDB-ID: #VU28778
Risk: Low
CVSSv3.1: 6.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N/E:H/RL:O/RC:C]
CVE-ID: CVE-2018-19953
CWE-ID:
CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Exploit availability: No
DescriptionThe disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data in user description. A remote attacker can inject link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
MitigationInstall updates from vendor's website.
Vulnerable software versionsQNAP QTS: 4.4.1.0948 20190527 - 4.4.1.1201 20200130
External linkshttp://www.qnap.com/en/release-notes/qts/4.4.1.1216/20200214
http://blog.securityevaluators.com/multiple-vulnerabilities-discovered-in-qnap-nass-303b720d487b
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?
Yes. This vulnerability is being exploited in the wild.
3) Stored cross-site scripting
EUVDB-ID: #VU28779
Risk: Low
CVSSv3.1: 6.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N/E:H/RL:O/RC:C]
CVE-ID: CVE-2018-19943
CWE-ID:
CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Exploit availability: No
DescriptionThe disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data in File Station. A remote attacker can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
MitigationInstall updates from vendor's website.
Vulnerable software versionsQNAP QTS: 4.4.1.0948 20190527 - 4.4.1.1201 20200130
External linkshttp://www.qnap.com/en/release-notes/qts/4.4.1.1216/20200214
http://blog.securityevaluators.com/multiple-vulnerabilities-discovered-in-qnap-nass-303b720d487b
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?
Yes. This vulnerability is being exploited in the wild.
