Information disclosure in QNAP NAS
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-34347 |
| CWE-ID | CWE-200 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
QNAP QTS Server applications / File servers (FTP/HTTP) QuTS hero Hardware solutions / Firmware QuTScloud Operating systems & Components / Operating system |
| Vendor | QNAP Systems, Inc. |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Information disclosure
EUVDB-ID: #VU59112
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-34347
CWE-ID:
CWE-200 - Information exposure
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application. A remote attacker can gain unauthorized access to sensitive information on the system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsQNAP QTS: 4.5.1.1456 20201015 - 4.5.4.1741 20210726
QuTS hero: h4.5.0.1279 build 20200421 - h4.5.3.1710 build 20210624
QuTScloud: 4.5.3.1652 20210428 - c4.5.6.1755 build 20210809
External linkshttp://www.qnap.com/en/security-advisory/qsa-21-53
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.
