Root code execution via writable LD_PRELOAD libraries
Published Jun 14, 2024 · Updated Feb 13, 2025
Local privilege escalation in Toshiba Tec e-STUDIO MFP firmware allows local users to execute arbitrary code as root through LD_PRELOAD. Two libraries named by the device-wide LD_PRELOAD variable are mode 777, so unprivileged replacement causes root and Apache processes to load attacker code. Local write access is required; remote exploitation additionally depends on a separate file-upload weakness.
Summary
What happened
Local privilege escalation in Toshiba Tec e-STUDIO MFP firmware allows local users to execute arbitrary code as root through LD_PRELOAD. Two libraries named by the device-wide LD_PRELOAD variable are mode 777, so unprivileged replacement causes root and Apache processes to load attacker code. Local write access is required; remote exploitation additionally depends on a separate file-upload weakness.
The record
- CVE
- CVE-2024-27149
- Published
- Jun 14, 2024
- Updated
- Feb 13, 2025
- Vendor
- Toshiba Tec Corporation
- Product
- e-STUDIO2610AC
- Classifications
- CWE-276, T1574.006
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 14, 2024CVE publishedPublication date reported by the CVE source.
- Feb 13, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=0 <=*
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
- LD_PRELOAD library replacement procedurefunctional · demonstrated
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Technologies
Your stack
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Your stack
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