CVE Catalog

CVE-2023-38505

HighCVSS 7.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.65%

46th percentile - higher than 46% of all known CVEs

Summary

DietPi-Dashboard has a vulnerability that allows an attacker to lock the dashboard in a state waiting for a TLS handshake, preventing legitimate traffic from accessing it. This issue exists in version 0.6.1 and has been patched in version 0.6.2.

Risk Assessment

An attacker locking the dashboard can lead to a lack of access to critical system management functions, impacting service availability within the organization.

Recommendation

It is recommended to upgrade to version 0.6.2 or to use a reverse proxy in front of the dashboard to handle HTTPS connections, avoiding direct exposure to the internet.

Related vulnerabilities

Original NVD description (English source)

DietPi-Dashboard is a web dashboard for the operating system DietPi. The dashboard only allows for one TLS handshake to be in process at a given moment. Once a TCP connection is established in HTTPS mode, it will assume that it should be waiting for a handshake, and will stay this way indefinitely until a handshake starts or some error occurs. In version 0.6.1, this can be exploited by simply not starting the handshake, preventing any other TLS handshakes from getting through. An attacker can lock the dashboard in a state where it is waiting for a TLS handshake from the attacker, who won't provide it. This prevents any legitimate traffic from getting to the dashboard, and can last indefinitely. Version 0.6.2 has a patch for this issue. As a workaround, do not use HTTPS mode on the open internet where anyone can connect. Instead, put a reverse proxy in front of the dashboard, and have it handle any HTTPS connections.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS