CVE-2011-4877 Denial of service in n/a

What is CVE-2011-4877?

CVE-2011-4877 is a high-severity denial of service 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

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 cause a denial of service (application crash) by sending crafted data over TCP.

Weakness: CWE-20

Which versions are affected by CVE-2011-4877?

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-2011-4877?

No fix has been published for CVE-2011-4877 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2011-4877 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2011-4877 exists.

Public exploit code: 1 Exploit-DB entry.

Other vulnerabilities in n/a

• CVE-2011-4509 Hardcoded credentials in n/a Critical 10.0
• CVE-2011-4513 Code injection in n/a Critical 10.0
• CVE-2011-4514 Auth bypass in n/a Critical 10.0
• CVE-2011-4508 Auth bypass in n/a Critical 9.3
• CVE-2011-4875 Memory corruption in n/a Critical 9.3

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-8wq6-wppf-wxxh.