Security readout for executives and security teams
Plain-English summary
CVE-2020-27746 is an information exposure issue in older Slurm releases. A race condition involving xauth and X11 magic cookies could let an unauthorized actor access sensitive authentication material. This mainly matters for HPC or cluster environments using affected Slurm versions and X11-related workflows.
Executive priority
Prioritize remediation where affected Slurm clusters support shared users or X11 workflows. Business urgency is moderate unless those conditions are absent, because the known impact is credential-like information exposure rather than confirmed remote compromise.
Technical view
Slurm before 19.05.8 and 20.x before 20.02.6 mishandles xauth data because of a race condition during a /proc filesystem read. The described impact is sensitive information exposure to an unauthorized actor. The provided sources do not include CVSS, CWE, exploit details, or broad affected-platform metadata.
Likely exposure
Exposure is most likely on clusters running Slurm versions earlier than 19.05.8 or 20.02.6, especially where X11/xauth workflows are enabled. The bundle does not identify other affected products or platforms beyond Slurm and Debian advisory coverage.
Exploitation context
The CVE is not listed as CISA KEV in the provided bundle, and no cited source states active exploitation. The issue is still security-relevant because leaked X11 magic cookies can undermine user session trust within affected cluster environments.
Researcher notes
Evidence is limited: no CVSS, CWE, exploit status, or detailed affected CPEs are present in the bundle. Focus validation on version range, X11/xauth configuration, and package provenance. Avoid assuming exploitability beyond the documented /proc read race and sensitive information exposure.
Mitigation direction
- Upgrade Slurm to 19.05.8, 20.02.6, or a later vendor-supported release.
- For Debian systems, apply the security update referenced in DSA-4841.
- Review vendor guidance before applying operational workarounds.
- Limit X11/xauth use on affected clusters until remediation is complete.
Validation and detection
- Inventory Slurm versions across all scheduler, login, and compute nodes.
- Confirm whether X11 forwarding or xauth integration is enabled.
- Check Debian hosts for packages covered by DSA-4841.
- Verify upgraded nodes report fixed or later Slurm versions.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2020-27746 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.schedmd.com/news.phpCVE reference · x_refsource_MISC
- DSA-4841CVE reference · vendor-advisory, x_refsource_DEBIAN
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.