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Medium severity · published Sep 9, 2020
CVE-2020-15791
A vulnerability has been identified in SIMATIC S7-300 CPU family (incl
6.5
CVSS
0.7%
EPSS
No
On KEV
Description
A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC S7-400 CPU family (incl. SIPLUS variants) (All versions), SIMATIC WinAC RTX (F) 2010 (All versions), SINUMERIK 840D sl (All versions). The authentication protocol between a client and a PLC via port 102/tcp (ISO-TSAP) insufficiently protects the transmitted password. This could allow an attacker that is able to intercept the network traffic to obtain valid PLC credentials.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 54% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SS
Simatic S7-300 Cpu 312 Firmware · Siemens
All versions, or not specified · source: NVD
SS
Simatic S7-300 Cpu 314 Firmware · Siemens
All versions, or not specified · source: NVD
SS
Simatic S7-300 Cpu 315-2 DP Firmware · Siemens
All versions, or not specified · source: NVD
SS
Simatic S7-300 Cpu 315-2 PN Firmware · Siemens
All versions, or not specified · source: NVD
SS
Simatic S7-300 Cpu 315f-2 DP Firmware · Siemens
All versions, or not specified · source: NVD
SS
Simatic S7-300 Cpu 315f-2 PN Firmware · Siemens
All versions, or not specified · source: NVD
SS
Simatic S7-300 Cpu 317-2 DP Firmware · Siemens
All versions, or not specified · source: NVD
SS
Simatic S7-300 Cpu 317-2 PN Firmware · Siemens
All versions, or not specified · source: NVD
SS
Simatic S7-300 Cpu 317f-2 DP Firmware · Siemens
All versions, or not specified · source: NVD
SS
Simatic S7-300 Cpu 317f-2 PN Firmware · Siemens
All versions, or not specified · source: NVD
SS
Simatic S7-400 Cpu 412 Firmware · Siemens
All versions, or not specified · source: NVD
SS
Simatic S7-400 Cpu 414 Firmware · Siemens
All versions, or not specified · source: NVD
Affected product
SS
Simatic S7-300 Cpu 312 Firmware
Siemens
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-15791
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-15791
Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-381684.pdf
More from Simatic S7-300 Cpu 312 Firmware
7.5
CVE-2020-15783
A vulnerability has been identified in SIMATIC S7-300 CPU family (incl