CVE-2023-39303 QTS, QuTS hero, QuTScloud

What is CVE-2023-39303?

CVE-2023-39303 is a medium-severity authentication bypass vulnerability in Qnap Qts, published on 2 Feb 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An improper authentication vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow users to compromise the security of the system via a network.

We have already fixed the vulnerability in the following versions: QTS 5.1.3.2578 build 20231110 and later QuTS hero h5.1.3.2578 build 20231110 and later QuTScloud c5.1.5.2651 and later

Weakness: CWE-287

Which versions are affected by CVE-2023-39303?

It affects 3 products.

Products include Qnap Qts, Qnap Quts Hero, Qnap Qutscloud.

How do I fix CVE-2023-39303?

No fix has been published for CVE-2023-39303 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2023-39303 being exploited?

There is no known exploitation of CVE-2023-39303 in the wild and no public exploit code.

Other vulnerabilities in Qnap Qts

• CVE-2020-2509 QNAP Network-Attached Storage (NAS) Command Injection Exploited Critical 9.8
• CVE-2018-19949 QNAP NAS File Station Command Injection Exploited Critical 9.8
• CVE-2019-7193 QNAP QTS Improper Input Validation Exploited Critical 9.8
• CVE-2018-19943 QNAP NAS File Station Cross-Site Scripting Exploited High 8.0
• CVE-2018-19953 QNAP NAS File Station Cross-Site Scripting Exploited Medium 6.1

All Qnap Qts vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-pg7w-g93j-pc6j.