A signal handler in sshd(8) may call a logging function that is not async-signal-safe. The signal handler is invoked when a client does not authenticate within the LoginGraceTime seconds (120 by default). This signal handler executes in the context of the sshd(8)'s privileged code, which is not sandboxed and runs with full root privileges. This issue is another instance of the problem in CVE-2024-6387 addressed by FreeBSD-SA-24:04.openssh. The faulty code in this case is from the integration of blacklistd in OpenSSH in FreeBSD. As a result of calling functions that are not async-signal-safe in the privileged sshd(8) context, a race condition exists that a determined attacker may be able to exploit to allow an unauthenticated remote code execution as root.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.1, indicating it can be exploited remotely over the network but requires specific conditions to be met without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 1 product from freebsd organizations running these solutions should prioritize assessment and patching.
Reported in 2024, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2024-08-12T13:38:44.203
2024-11-21T09:51:46.310
Modified
CVSSv3.1: 8.1 (HIGH)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | freebsd | freebsd | < 13.0 | Yes |
| Operating System | freebsd | freebsd | < 13.3 | Yes |
| Operating System | freebsd | freebsd | 13.3 | Yes |
| Operating System | freebsd | freebsd | 13.3 | Yes |
| Operating System | freebsd | freebsd | 13.3 | Yes |
| Operating System | freebsd | freebsd | 13.3 | Yes |
| Operating System | freebsd | freebsd | 14.0 | Yes |
| Operating System | freebsd | freebsd | 14.0 | Yes |
| Operating System | freebsd | freebsd | 14.0 | Yes |
| Operating System | freebsd | freebsd | 14.0 | Yes |
| Operating System | freebsd | freebsd | 14.0 | Yes |
| Operating System | freebsd | freebsd | 14.0 | Yes |
| Operating System | freebsd | freebsd | 14.0 | Yes |
| Operating System | freebsd | freebsd | 14.0 | Yes |
| Operating System | freebsd | freebsd | 14.0 | Yes |
| Operating System | freebsd | freebsd | 14.0 | Yes |
| Operating System | freebsd | freebsd | 14.0 | Yes |
| Operating System | freebsd | freebsd | 14.1 | Yes |
| Operating System | freebsd | freebsd | 14.1 | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For freebsd's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.