Remote Code Execution in Samba Versions 3.5.0 to 4.6.4 by Louis Lu
CVE-2017-7494

9.8CRITICAL

Key Information:

Vendor

Samba

Status
Vendor
CVE Published:
30 May 2017

Badges

πŸ’° RansomwareπŸ‘Ύ Exploit Exists🟑 Public PoC🟣 EPSS 94%πŸ¦… CISA Reported

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

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • πŸ’°

    Used in Ransomware

  • πŸ¦…

    CISA Reported

  • 🟑

    Public PoC available

  • πŸ‘Ύ

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.