CVE-2011-4879

Public Exploit

Description

miniweb.exe in the HMI web server in Siemens WinCC flexible 2004, 2005, 2007, and 2008 before SP3; WinCC V11 (aka TIA portal) before SP2 Update 1; the TP, OP, MP, Comfort Panels, and Mobile Panels SIMATIC HMI panels; WinCC V11 Runtime Advanced; and WinCC flexible Runtime does not properly handle URIs beginning with a 0xfa character, which allows remote attackers to read data from arbitrary memory locations or cause a denial of service (application crash) via a crafted POST request.

Category

8.5
CVSS
Severity: High
CVSS 2.0 •
EPSS 39.57% Top 5%
Vendor Advisory siemens.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-332-02.pdf
http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-332-02A.pdf
http://www.siemens.com/corporate-technology/pool/de/forschungsfelder/siemens_security_advisory_ssa-345442.pdf vendor advisory
http://www.exploit-db.com/exploits/18166 exploit
http://aluigi.org/adv/winccflex_1-adv.txt
http://www.osvdb.org/77384 vdb entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/71453 vdb entry
http://www.us-cert.gov/control_systems/pdf/ICSA-12-030-01.pdf us government resource

Frequently Asked Questions

What is the severity of CVE-2011-4879?
CVE-2011-4879 has been scored as a high severity vulnerability.
How to fix CVE-2011-4879?
To fix CVE-2011-4879, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2011-4879 being actively exploited in the wild?
It is possible that CVE-2011-4879 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~40% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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