Elastic Security Detection Rules

Potential CVE-2025-32463 Nsswitch File Creation

Last updated 23 days ago on 2025-10-01
Created 23 days ago on 2025-10-01

About

Detects suspicious creation of the nsswitch.conf file, outside of the regular /etc/nsswitch.conf path, consistent with attempts to exploit CVE-2025-32463 (the "sudo chroot" privilege escalation), where an attacker tricks sudo into using attacker-controlled NSS files or libraries to gain root.
Tags
Domain: EndpointOS: LinuxUse Case: Threat DetectionTactic: Privilege EscalationData Source: Elastic DefendData Source: SentinelOneData Source: CrowdstrikeData Source: Elastic EndgameData Source: Auditd ManagerUse Case: VulnerabilityLanguage: eql
Severity
high
Risk Score
73
MITRE ATT&CK™

Privilege Escalation (TA0004)(opens in a new tab or window)

↳ Exploitation for Privilege Escalation (T1068)(opens in a new tab or window)

License
Elastic License v2(opens in a new tab or window)

Definition

Rule Type
Event Correlation Rule
Integration Pack
Prebuilt Security Detection Rules
Index Patterns
logs-endpoint.events.file*logs-sentinel_one_cloud_funnel.*endgame-*auditbeat-*logs-auditd_manager.auditd-*logs-crowdstrike.fdr*
Related Integrations

endpoint(opens in a new tab or window)

auditd_manager(opens in a new tab or window)

sentinel_one_cloud_funnel(opens in a new tab or window)

crowdstrike(opens in a new tab or window)

Query
file where host.os.type == "linux" and event.type == "creation" and file.path like "/*/etc/nsswitch.conf" and
process.name in ("bash", "dash", "sh", "tcsh", "csh", "zsh", "ksh", "fish") and
not (
  process.name == "dash" and file.path like ("/var/tmp/mkinitramfs_*", "/tmp/tmp.*/mkinitramfs_*")
)

Install detection rules in Elastic Security

Detect Potential CVE-2025-32463 Nsswitch File Creation in the Elastic Security detection engine by installing this rule into your Elastic Stack.

To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(opens in a new tab or window).