Potential Privilege Escalation via CVE-2023-4911
This rule detects potential privilege escalation attempts through Looney Tunables (CVE-2023-4911). Looney Tunables is a buffer overflow vulnerability in GNU C Library's dynamic loader's processing of the…
Description
This rule detects potential privilege escalation attempts through Looney Tunables (CVE-2023-4911). Looney Tunables is a buffer overflow vulnerability in GNU C Library's dynamic loader's processing of the GLIBC_TUNABLES environment variable.
Detection logic
Its licence does not clear it for publishing here
Sunturai publishes a detection's own text where the licence it arrived under has been reviewed and permits it, and Elastic License 2.0 has not. The query as its source wrote it, its canonical form and the hash that pins this revision are in the workspace record.
Detection requirements
- Platform
- ContainersIaaSIdentity ProviderLinuxmacOSOffice SuiteWindows
The rule states no platform. This is derived from the 2 ATT&CK techniques it maps to.
- Log source category
- event_index
MITRE ATT&CK mappings
0 exclusive techniques.This is coverage no other published rule has; it is not this rule's total technique count.
References
| Reference | Cited by |
|---|---|
| blog.qualys.com/vulnerabilities-threat-research/2023/10/03/cve-2023-4911-looney-tunables-local-privilege-escalation-in-the-glibcs-ld-so | Only this detection cites it |
From the source
- At source
- Open at source
- Upstream identifier
- 6d8685a1-94fa-4ef7-83de-59302e7c4ca8
- Tagged by the source as
- Data Source: Elastic DefendDomain: EndpointNoise: LowOS: LinuxPerformance: NormalPlatform: LinuxProfile: RecommendedResources: Investigation GuideRule Type: Event Correlation (EQL)Tactic: Privilege EscalationThreat: Vulnerability ExploitUse Case: Threat DetectionUse Case: VulnerabilityVuln: CVE-2023-4911
Licence
- Published under
- Elastic License 2.0Read the licence
- Attribution
- Required
Authorship
- Written by
- Published
- Sep 20, 2026
- Version
- 3