CVE-2023-53959

Description

FileZilla Client 3.63.1 contains a DLL hijacking vulnerability that allows attackers to execute malicious code by placing a crafted TextShaping.dll in the application directory. Attackers can generate a reverse shell payload using msfvenom and replace the missing DLL to achieve remote code execution when the application launches.

CVSS v3.1 Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-427 CWE-427

Affected Products

Vendor	Product	Versions
filezilla-project	filezilla_client	All

References

Exploits

https://www.exploit-db.com/exploits/51267

Other References

https://filezilla-project.org/ https://www.vulncheck.com/advisories/filezilla-client-dll-hijacking-via-missing-textshapingdll

Frequently Asked Questions

What is CVE-2023-53959? +

FileZilla Client 3.63.1 contains a DLL hijacking vulnerability that allows attackers to execute malicious code by placing a crafted TextShaping.dll in the application directory. Attackers can generate a reverse shell payload using msfvenom and replace the missing DLL to achieve remote code execution when the application launches. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2023-53959? +

CVE-2023-53959 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2023-53959? +

CVE-2023-53959 affects products from filezilla-project, specifically: filezilla_client. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-53959? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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