Vulnerability Details : CVE-2018-11453
A vulnerability has been identified in SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V10, V11, V12 (All versions), SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V13 (All versions < V13 SP2 Update 2), SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V14 (All versions < V14 SP1 Update 6), SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V15 (All versions < V15 Update 2). Improper file permissions in the default installation of TIA Portal may allow an attacker with local file system access to insert specially crafted files which may prevent TIA Portal startup (Denial-of-Service) or lead to local code execution. No special privileges are required, but the victim needs to attempt to start TIA Portal after the manipulation.
Vulnerability category: Denial of service
Products affected by CVE-2018-11453
- cpe:2.3:a:siemens:simatic_step_7_\(tia_portal\):14.0:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_step_7_\(tia_portal\):13.0:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_step_7_\(tia_portal\):13.0:sp1:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_step_7_\(tia_portal\):11.0:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_step_7_\(tia_portal\):12.0:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_step_7_\(tia_portal\):10.0:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_step_7_\(tia_portal\):15.0:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_wincc_\(tia_portal\):13.0:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_wincc_\(tia_portal\):14.0:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_wincc_\(tia_portal\):10.0:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_wincc_\(tia_portal\):11.0:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_wincc_\(tia_portal\):12.0:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_wincc_\(tia_portal\):15.0:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-11453
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 12 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-11453
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.6
|
MEDIUM | AV:L/AC:L/Au:N/C:P/I:P/A:P |
3.9
|
6.4
|
NIST | |
|
7.8
|
HIGH | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2018-11453
-
During installation, installed file permissions are set to allow anyone to modify those files.Assigned by: productcert@siemens.com (Secondary)
-
The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-11453
-
https://cert-portal.siemens.com/productcert/pdf/ssa-979106.pdf
Vendor Advisory
-
http://www.securityfocus.com/bid/105115
Siemens SIMATIC STEP 7 and SIMATIC WinCC Multiple Insecure File Permissions VulnerabilitiesThird Party Advisory;VDB Entry
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