Vulnerability Details : CVE-2016-9154
Siemens Desigo PX Web modules PXA40-W0, PXA40-W1, PXA40-W2 for Desigo PX automation controllers PXC00-E.D, PXC50-E.D, PXC100-E.D, PXC200-E.D (All firmware versions < V6.00.046) and Desigo PX Web modules PXA30-W0, PXA30-W1, PXA30-W2 for Desigo PX automation controllers PXC00-U, PXC64-U, PXC128-U (All firmware versions < V6.00.046) use a pseudo random number generator with insufficient entropy to generate certificates for HTTPS, potentially allowing remote attackers to reconstruct the corresponding private key.
Products affected by CVE-2016-9154
- cpe:2.3:a:siemens:desigo_web_module_pxa30-w0_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:desigo_web_module_pxa30-w1_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:desigo_web_module_pxa30-w2_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:desigo_web_module_pxa40-w0_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:desigo_web_module_pxa40-w1_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:desigo_web_module_pxa40-w2_firmware:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2016-9154
0.24%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 61 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2016-9154
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:P/I:N/A:N |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2016-9154
-
The lack of entropy available for, or used by, a Pseudo-Random Number Generator (PRNG) can be a stability and security threat.Assigned by:
- nvd@nist.gov (Primary)
- productcert@siemens.com (Secondary)
References for CVE-2016-9154
-
http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-856492.pdf
Mitigation;Vendor Advisory
-
https://ics-cert.us-cert.gov/advisories/ICSA-16-355-01
Siemens Desigo PX Web Module Insufficient Entropy Vulnerability | CISAThird Party Advisory;US Government Resource
-
http://www.securityfocus.com/bid/94962
Siemens Desigo PX Web Modules CVE-2016-9154 Insufficient Entropy VulnerabilityThird Party Advisory;VDB Entry
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