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SiemensCVE-2020-28395

HistoryJan 12, 2021 - 9:15 p.m.

CVE-2020-28395

2021-01-1221:15:18

CWE-798

CWE-321

siemens

web.nvd.nist.gov

cve-2020-28395

scalance

x-200rna

x-300

switch

vulnerability

decryption

traffic

nvd

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:N/A:N

CVSS3

5.9

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

AI Score

5.4

Confidence

High

EPSS

0.001

Percentile

41.2%

JSON

A vulnerability has been identified in SCALANCE X-200RNA switch family (All versions < V3.2.7), SCALANCE X-300 switch family (incl. X408 and SIPLUS NET variants) (All versions < V4.1.0). Devices do not create a new unique private key after factory reset. An attacker could leverage this situation to a man-in-the-middle situation and decrypt previously captured traffic.

Affected configurations

Nvd

Node

siemensscalance_xr324-12m_firmwareRange<4.1.0

AND

siemensscalance_xr324-12mMatch-

Node

siemensscalance_xr324-12m_ts_firmwareRange<4.1.0

AND

siemensscalance_xr324-12m_tsMatch-

Node

siemensscalance_xr324-4m_eec_firmwareRange<4.1.0

AND

siemensscalance_xr324-4m_eecMatch-

Node

siemensscalance_xr324-4m_poe_firmwareRange<4.1.0

AND

siemensscalance_xr324-4m_poeMatch-

Node

siemensscalance_xr324-4m_poe_ts_firmwareRange<4.1.0

AND

siemensscalance_xr324-4m_poe_tsMatch-

Node

siemensscalance_xr324wg_firmwareRange<4.1.0

AND

siemensscalance_xr324wgMatch-

Node

siemensscalance_xr326-2c_poe_wg_firmwareRange<4.1.0

AND

siemensscalance_xr326-2c_poe_wgMatch-

Node

siemensscalance_xr328-4c_wg_firmwareRange<4.1.0

AND

siemensscalance_xr328-4c_wgMatch-

VendorProductVersionCPE
siemensscalance_xr324-12m_firmware*cpe:2.3:o:siemens:scalance_xr324-12m_firmware:*:*:*:*:*:*:*:*
siemensscalance_xr324-12m-cpe:2.3:h:siemens:scalance_xr324-12m:-:*:*:*:*:*:*:*
siemensscalance_xr324-12m_ts_firmware*cpe:2.3:o:siemens:scalance_xr324-12m_ts_firmware:*:*:*:*:*:*:*:*
siemensscalance_xr324-12m_ts-cpe:2.3:h:siemens:scalance_xr324-12m_ts:-:*:*:*:*:*:*:*
siemensscalance_xr324-4m_eec_firmware*cpe:2.3:o:siemens:scalance_xr324-4m_eec_firmware:*:*:*:*:*:*:*:*
siemensscalance_xr324-4m_eec-cpe:2.3:h:siemens:scalance_xr324-4m_eec:-:*:*:*:*:*:*:*
siemensscalance_xr324-4m_poe_firmware*cpe:2.3:o:siemens:scalance_xr324-4m_poe_firmware:*:*:*:*:*:*:*:*
siemensscalance_xr324-4m_poe-cpe:2.3:h:siemens:scalance_xr324-4m_poe:-:*:*:*:*:*:*:*
siemensscalance_xr324-4m_poe_ts_firmware*cpe:2.3:o:siemens:scalance_xr324-4m_poe_ts_firmware:*:*:*:*:*:*:*:*
siemensscalance_xr324-4m_poe_ts-cpe:2.3:h:siemens:scalance_xr324-4m_poe_ts:-:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
siemens	scalance_xr324-12m_firmware	*	cpe:2.3:o:siemens:scalance_xr324-12m_firmware::::::::
siemens	scalance_xr324-12m	-	cpe:2.3:h:siemens:scalance_xr324-12m:-:::::::*
siemens	scalance_xr324-12m_ts_firmware	*	cpe:2.3:o:siemens:scalance_xr324-12m_ts_firmware::::::::
siemens	scalance_xr324-12m_ts	-	cpe:2.3:h:siemens:scalance_xr324-12m_ts:-:::::::*
siemens	scalance_xr324-4m_eec_firmware	*	cpe:2.3:o:siemens:scalance_xr324-4m_eec_firmware::::::::
siemens	scalance_xr324-4m_eec	-	cpe:2.3:h:siemens:scalance_xr324-4m_eec:-:::::::*
siemens	scalance_xr324-4m_poe_firmware	*	cpe:2.3:o:siemens:scalance_xr324-4m_poe_firmware::::::::
siemens	scalance_xr324-4m_poe	-	cpe:2.3:h:siemens:scalance_xr324-4m_poe:-:::::::*
siemens	scalance_xr324-4m_poe_ts_firmware	*	cpe:2.3:o:siemens:scalance_xr324-4m_poe_ts_firmware::::::::
siemens	scalance_xr324-4m_poe_ts	-	cpe:2.3:h:siemens:scalance_xr324-4m_poe_ts:-:::::::*

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CNA Affected

[
  {
    "vendor": "Siemens",
    "product": "SCALANCE X-200RNA switch family",
    "versions": [
      {
        "version": "All versions < V3.2.7",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Siemens",
    "product": "SCALANCE X-300 switch family (incl. X408 and SIPLUS NET variants)",
    "versions": [
      {
        "version": "All versions < V4.1.0",
        "status": "affected"
      }
    ]
  }
]

References

cert-portal.siemens.com/productcert/pdf/ssa-274900.pdf

us-cert.cisa.gov/ics/advisories/icsa-21-012-02

Social References

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:N/A:N

CVSS3

5.9

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

AI Score

5.4

Confidence

High

EPSS

0.001

Percentile

41.2%

JSON

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