CVE-2023-1637
Linux Kernel 5.18
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NSummary
CVE-2023-1637 is a medium-severity Sensitive Information in Resource Not Removed Before Reuse (CWE-226) vulnerability in Linux Linux Kernel. Its CVSS base score is 5.5 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique OS Credential Dumping (T1003); ranked at the 13th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-23866
Vulnerability Data
A flaw that boot CPU could be vulnerable for the speculative execution behavior kind of attacks in the Linux kernel X86 CPU Power management options functionality was found in the way user resuming CPU from suspend-to-RAM. A local user could…
more
use this flaw to potentially get unauthorized access to some memory of the CPU similar to the speculative execution behavior kind of attacks.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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- 9 hardening rules · 4 OS baselines
V14.2.8V14.3.3V14.3.1
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Eradication of spilled information from contaminated systems mitigates the effects of improper removal of sensitive data before storage or transfer.
The control requires verified removal of sensitive data before media is made available at a reduced classification level, directly addressing improper removal prior to storage or transfer.
Retention policies enforce removal or sanitization of sensitive data before storage or transfer per regulatory requirements.
The explicit requirement to delete inaccurate/outdated PII implements proper removal of sensitive information before further storage or transfer.
The generate-on-demand-and-delete requirement enforces removal of sensitive information before storage or transfer, preventing improper retention.
Requires explicit removal of sensitive information prior to component transfer or disposal, reducing exposure from retained data.
Requiring sanitization of media prior to removal for off-site maintenance ensures sensitive information is removed before the resource is reused or accessed externally.
Procedures include sanitization, overwriting, and disposal requirements to remove sensitive data before media reuse or release.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Explicit example calls for removing confidential data (e.g., from process memory) after use, directly preventing reuse of uncleared resources.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Explicitly requires secure deletion of information before resources are reused or disposed.
Data-masking techniques can substitute for removal when full deletion is impractical.
Mandates secure disposal or re-use of equipment, covering media sanitization but not in-memory reuse.
Security testing can detect failures to sanitize resources before reuse.
Test-data protection rules require sanitization of production data used in testing.
Classification identifies sensitive data that must be removed before storage or transfer.
Hardening callouts derived
Configuration rules from DISA STIG baselines that bear on weaknesses of the type cited by this CVE. Each rule is shown with the relationship its mapping actually records, against the CWE it was authored against. Derived via CVE→CWE over `controls_xwalks` (authoritative rows only; rows rated `none` are excluded).
Oracle Linux 8 (3 rules)
- V-248579 OL 8 must restrict access to the kernel message buffer. prevents CWE-212, CWE-226
- V-248580 OL 8 must prevent kernel profiling by unprivileged users. prevents CWE-212
- V-248551 A sticky bit must be set on all OL 8 public directories to prevent unauthorized and unintended information transferred via shared system resources. prevents CWE-212
Oracle Linux 9 (1 rule)
- V-271745 OL 9 must restrict access to the kernel message buffer. prevents CWE-212, CWE-226
RHEL 8 (1 rule)
- V-230269 RHEL 8 must restrict access to the kernel message buffer. prevents CWE-212, CWE-226
RHEL 9 (1 rule)
- V-257797 RHEL 9 must restrict access to the kernel message buffer. prevents CWE-226