Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2011-4879

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
03/02/2012
Last modified:
11/04/2025

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.

Impact

Vector 2.0
AV:N/AC:L/Au:N/C:P/I:N/A:C CVSS v2.0 Severity and Metrics:

Base Score: 8.50 HIGH
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:C

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): None
Availability (A): Complete

Base Score 2.0
8.50
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:siemens:wincc_flexible:2004:*:*:*:*:*:*:*
cpe:2.3:a:siemens:wincc_flexible:2005:*:*:*:*:*:*:*
cpe:2.3:a:siemens:wincc_flexible:2007:*:*:*:*:*:*:*
cpe:2.3:a:siemens:wincc_flexible:2008:*:*:*:*:*:*:*
cpe:2.3:a:siemens:wincc_flexible:2008:sp1:*:*:*:*:*:*
cpe:2.3:a:siemens:wincc_flexible:2008:sp2:*:*:*:*:*:*
cpe:2.3:a:siemens:wincc:*:sp2:*:*:*:*:*:* v11 (including)
cpe:2.3:a:siemens:wincc:v11:*:*:*:*:*:*:*
cpe:2.3:a:siemens:wincc:v11:sp1:*:*:*:*:*:*
cpe:2.3:a:siemens:simatic_hmi_panels:comfort_panels:*:*:*:*:*:*:*
cpe:2.3:a:siemens:simatic_hmi_panels:mobile_panels:*:*:*:*:*:*:*
cpe:2.3:a:siemens:simatic_hmi_panels:mp:*:*:*:*:*:*:*
cpe:2.3:a:siemens:simatic_hmi_panels:op:*:*:*:*:*:*:*
cpe:2.3:a:siemens:simatic_hmi_panels:tp:*:*:*:*:*:*:*
cpe:2.3:a:siemens:wincc_runtime_advanced:v11:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools