CVE-2019-18321 Path traversal in SPPA-T3000 MS3000 Migration Server

Critical 9.1 Published 12 Dec 2019 Updated 5 Aug 2024

An attacker with network access can read and write arbitrary files on the Siemens SPPA-T3000 MS3000 Migration Server via crafted packets.

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

What is CVE-2019-18321?

CVE-2019-18321 is a critical path traversal vulnerability in Siemens SPPA-T3000 MS3000 Migration Server, published on 12 Dec 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability has been identified in SPPA-T3000 MS3000 Migration Server (All versions). An attacker with network access to the MS3000 Server could be able to read and write arbitrary files on the local file system by sending specifically crafted packets to port 5010/tcp. This vulnerability is independent from CVE-2019-18322. Please note that an attacker needs to have network access to the MS3000 in order to exploit this vulnerability. At the time of advisory publication no public exploitation of this security vulnerability was known.

Weakness: CWE-287

Which versions are affected by CVE-2019-18321?

It affects 1 product.

Products include Siemens Sppa-T3000 Ms3000 Migration Server.

How do I fix CVE-2019-18321?

No fix has been published for CVE-2019-18321 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-2019-18321 being exploited?

There is no known exploitation of CVE-2019-18321 in the wild and no public exploit code.

Sources

Also known as GHSA-8vh5-q8fh-cmgp.