Directory Traversal Vulnerability in Core FTP SFTP Server
CVE-2019-9648

5.3MEDIUM

Key Information:

Vendor

Coreftp

Status
Core Ftp
Vendor
CVE Published:
22 March 2019

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 19%

What is CVE-2019-9648?

A directory traversal vulnerability has been identified in the SFTP Server component of Core FTP version 2.0 Build 674. By exploiting this flaw, an attacker can employ the SIZE command in combination with a '....' substring to traverse directories. This allows unauthorized users to enumerate files within the system, based on the returned information regarding file existence. Proper validation and sanitization of input are necessary to mitigate such vulnerabilities.

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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.

CVE-2019-9648 - Proof of Concept

References

http://www.securityfocus.com/bid/107446
vdb-entryx_refsource_BID
http://www.coreftp.com/forums/viewtopic.php?f=15&t=4022509
x_refsource_CONFIRM
https://www.exploit-db.com/exploits/46535
exploitx_refsource_EXPLOIT-DB

EPSS Score

19% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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