Externally Controlled Reference RCE in Photo Station (QTS5.0.1)
CVE-2022-27593 Published on September 8, 2022
DeadBolt Ransomware
An externally controlled reference to a resource vulnerability has been reported to affect QNAP NAS running Photo Station. If exploited, This could allow an attacker to modify system files. We have already fixed the vulnerability in the following versions: QTS 5.0.1: Photo Station 6.1.2 and later QTS 5.0.0/4.5.x: Photo Station 6.0.22 and later QTS 4.3.6: Photo Station 5.7.18 and later QTS 4.3.3: Photo Station 5.4.15 and later QTS 4.2.6: Photo Station 5.2.14 and later
Known Exploited Vulnerability
This QNAP Photo Station Externally Controlled Reference Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Certain QNAP NAS running Photo Station with internet exposure contain an externally controlled reference to a resource vulnerability which can allow an attacker to modify system files. This vulnerability was observed being utilized in a Deadbolt ransomware campaign.
The following remediation steps are recommended / required by September 29, 2022: Apply updates per vendor instructions.
Vulnerability Analysis
CVE-2022-27593 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. This vulnerability is known to be actively exploited by threat actors in an automatable fashion. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a high impact on integrity and availability.
Weakness Type
Externally Controlled Reference to a Resource in Another Sphere
The product uses an externally controlled name or reference that resolves to a resource that is outside of the intended control sphere.
Products Associated with CVE-2022-27593
You can be notified by email with stack.watch whenever vulnerabilities like CVE-2022-27593 are published in QNAP Photo Station:
Affected Versions
QNAP Systems Inc. Photo Station:- Version unspecified and below 6.1.2 is affected.
- Version unspecified and below 6.0.22 is affected.
- Version unspecified and below 6.0.22 is affected.
- Version unspecified and below 5.7.18 is affected.
- Version unspecified and below 5.4.15 is affected.
- Version unspecified and below 5.2.14 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.