CVE-2011-4876 Path traversal in n/a

Critical 9.3 Published 3 Feb 2012 Updated 7 Aug 2024

Remote attackers can execute arbitrary file operations via directory traversal in Siemens WinCC HMI systems when Transfer Mode is enabled.

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-2011-4876?

CVE-2011-4876 is a critical path traversal vulnerability in n/a, published on 3 Feb 2012. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Directory traversal vulnerability in HmiLoad in the runtime loader in Siemens WinCC flexible 2004, 2005, 2007, and 2008; WinCC V11 (aka TIA portal); the TP, OP, MP, Comfort Panels, and Mobile Panels SIMATIC HMI panels; WinCC V11 Runtime Advanced; and WinCC flexible Runtime, when Transfer Mode is enabled, allows remote attackers to execute, read, create, modify, or delete arbitrary files via a .. (dot dot) in a string.

Weakness: CWE-22

Which versions are affected by CVE-2011-4876?

It affects 5 products.

Products include Siemens Simatic Hmi Panels, Siemens Wincc, Siemens Wincc Flexible, Siemens Wincc Flexible Runtime, Siemens Wincc Runtime Advanced.

How do I fix CVE-2011-4876?

No fix has been published for CVE-2011-4876 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-2011-4876 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2011-4876 exists.

Public exploit code: 1 Exploit-DB entry.

Sources

Also known as GHSA-3ppq-p8g9-x6rg.