Multiple vulnerabilities in QNAP operating systems
| Risk | Critical |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2023-20032 CVE-2023-20052 |
| CWE-ID | CWE-122 CWE-611 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #2 is available. |
| Vulnerable software Subscribe |
QuTScloud Operating systems & Components / Operating system QNAP QTS Server applications / File servers (FTP/HTTP) QuTS hero Hardware solutions / Firmware |
| Vendor | QNAP Systems, Inc. |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Heap-based buffer overflow
EUVDB-ID: #VU72297
Risk: Critical
CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-20032
CWE-ID:
CWE-122 - Heap-based Buffer Overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in the HFS+ partition file parser. A remote attacker can pass specially crafted data to the application, trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall update from vendor's website.
Vulnerable software versionsQuTScloud: before c5.0.1.2374
QNAP QTS: before 5.0.1.2376 20230421
QuTS hero: before h5.0.1.2376 build 20230421
External linkshttp://www.qnap.com/en/security-advisory/qsa-23-26
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) XML External Entity injection
EUVDB-ID: #VU72298
Risk: Medium
CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N/E:P/RL:O/RC:C]
CVE-ID: CVE-2023-20052
CWE-ID:
CWE-611 - Improper Restriction of XML External Entity Reference ('XXE')
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to enabling XML entity substitution. A remote attacker can pass a specially crafted XML code to the antivirus and view bytes from any file that may be read by the ClamAV scanning process.
Install update from vendor's website.
Vulnerable software versionsQuTScloud: before c5.0.1.2374
QNAP QTS: before 5.0.1.2376 20230421
QuTS hero: before h5.0.1.2376 build 20230421
External linkshttp://www.qnap.com/en/security-advisory/qsa-23-26
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
