CVE-2023-42657 WS_FTP Server Directory Traversal

Critical 9.9 Published 27 Sep 2023 Updated 24 Sep 2024

Attackers can perform file operations outside authorized directories and escape the server context to modify or delete files on the underlying operating system.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-42657?

CVE-2023-42657 is a critical path traversal vulnerability in Progress Software Corporation WS_FTP Server, published on 27 Sep 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a directory traversal vulnerability was discovered. An attacker could leverage this vulnerability to perform file operations (delete, rename, rmdir, mkdir) on files and folders outside of their authorized WS_FTP folder path. Attackers could also escape the context of the WS_FTP Server file structure and perform the same level of operations (delete, rename, rmdir, mkdir) on file and folder locations on the underlying operating system.

Weakness: CWE-22

Which versions are affected by CVE-2023-42657?

It affects 1 product.

Products include Progress Ws Ftp Server.

How do I fix CVE-2023-42657?

No fix has been published for CVE-2023-42657 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2023-42657 being exploited?

There is no known exploitation of CVE-2023-42657 in the wild and no public exploit code.

Sources

Also known as GHSA-vrp3-qmw4-rx8c.