Remote Code Execution in Samba Versions 3.5.0 to 4.6.4 by Louis Lu
CVE-2017-7494
Key Information:
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What is CVE-2017-7494?
Samba versions 3.5.0 up to 4.6.4, along with specific earlier releases, contain a serious vulnerability where a malicious client can upload a shared library to a writable share. This exploit allows the server to load and execute the uploaded file, leading to unauthorized control and potential damage to the system.
CISA has reported CVE-2017-7494
CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed CVE-2017-7494 as being exploited and is known by the CISA as enabling ransomware campaigns.
The CISA's recommendation is: Apply updates per vendor instructions.

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Affected Version(s)
samba since 3.5.0
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.
References
EPSS Score
94% chance of being exploited in the next 30 days.
CVSS V3.1
Timeline
- π°
Used in Ransomware
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CISA Reported
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Public PoC available
- πΎ
Exploit known to exist
Vulnerability published
Vulnerability Reserved
