The _prolog_error function in slurmd/req.c in Slurm before 15.08.13, 16.x before 16.05.7, and 17.x before 17.02.0-pre4 has a vulnerability in how the slurmd daemon informs users of a Prolog failure on a compute node. That vulnerability could allow a user to assume control of an arbitrary file on the system. Any exploitation of this is dependent on the user being able to cause or anticipate the failure (non-zero return code) of a Prolog script that their job would run on. This issue affects all Slurm versions from 0.6.0 (September 2005) to present. Workarounds to prevent exploitation of this are to either disable your Prolog script, or modify it such that it always returns 0 ("success") and adjust it to set the node as down using scontrol instead of relying on the slurmd to handle that automatically. If you do not have a Prolog set you are unaffected by this issue.
| Software | From | Fixed in |
|---|---|---|
| schedmd / slurm | 17.02.0-pre2 | 17.02.0-pre2.x |
| schedmd / slurm | 16.05.0-rc2 | 16.05.0-rc2.x |
| schedmd / slurm | 16.05.1 | 16.05.1.x |
| schedmd / slurm | 16.05.0 | 16.05.0.x |
| schedmd / slurm | 16.05.0-pre2 | 16.05.0-pre2.x |
| schedmd / slurm | 17.02.0-pre3 | 17.02.0-pre3.x |
| schedmd / slurm | 16.05.3 | 16.05.3.x |
| schedmd / slurm | 16.05.0-rc1 | 16.05.0-rc1.x |
| schedmd / slurm | 16.05.6 | 16.05.6.x |
| schedmd / slurm | 17.02.0-pre1 | 17.02.0-pre1.x |
| schedmd / slurm | 16.05.0-pre1 | 16.05.0-pre1.x |
| schedmd / slurm | - | 15.08.12.x |
| schedmd / slurm | 16.05.2 | 16.05.2.x |
| schedmd / slurm | 16.05.4 | 16.05.4.x |
| schedmd / slurm | 16.05.5 | 16.05.5.x |
A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.
CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.
A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.
Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.
Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.
SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.