CVE-2025-0306
Published: 09 January 2025
Summary
CVE-2025-0306 is a high-severity Covert Timing Channel (CWE-385) vulnerability. Its CVSS base score is 7.4 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 36.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 RA-5 (Vulnerability Monitoring and Scanning) and SI-2 (Flaw Remediation).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Timely identification, reporting, and correction of the flaw in the Ruby interpreter directly prevents exploitation of the Marvin Attack.
Vulnerability scanning detects systems using the vulnerable Ruby interpreter, enabling proactive remediation prior to attack.
System monitoring identifies anomalous large-volume message exchanges required to conduct the Marvin Attack.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Remote unauthenticated network exploitation of Ruby crypto flaw enabling decryption/forgery directly matches public-facing application exploitation.
NVD Description
A vulnerability was found in Ruby. The Ruby interpreter is vulnerable to the Marvin Attack. This attack allows the attacker to decrypt previously encrypted messages or forge signatures by exchanging a large number of messages with the vulnerable service.
Deeper analysisAI
CVE-2025-0306 is a vulnerability in the Ruby interpreter that exposes it to the Marvin Attack. Published on 2025-01-09, this issue is classified under CWE-385 and carries a CVSS v3.1 base score of 7.4 (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N), indicating high confidentiality and integrity impacts with no availability effects.
The attack requires a remote, unauthenticated adversary to engage the vulnerable service over the network, though it demands high complexity with no user interaction needed. By exchanging a large number of messages with the service, the attacker can decrypt previously encrypted messages or forge signatures.
Mitigation guidance is provided in vendor advisories, including Red Hat security updates at https://access.redhat.com/security/cve/CVE-2025-0306 and https://bugzilla.redhat.com/show_bug.cgi?id=2336100, as well as NetApp advisory ntap-20250221-0009/ at https://security.netapp.com/advisory/ntap-20250221-0009/.
Details
- CWE(s)