CVE-2020-28391

12.01.2021, 21:15

A vulnerability has been identified in SCALANCE X-200 switch family (incl. SIPLUS NET variants) (All versions < V5.2.5), SCALANCE X-200IRT switch family (incl. SIPLUS NET variants) (All versions < V5.5.0), SCALANCE X-200RNA switch family (All versions < V3.2.7). Devices create a new unique key upon factory reset, except when used with C-PLUG. When used with C-PLUG the devices use the hardcoded private RSA-key shipped with the firmware-image. An attacker could leverage this situation to a man-in-the-middle situation and decrypt previously captured traffic.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	NIST	5.9 MEDIUM	NETWORK	HIGH	NONE	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
siemens	CNA	---				---
CVE	ADP	---				---

Base Score

CVSS 3.x

EPSS Score

Percentile: 36%

Vendor	Product	Version
siemens	scalance_x200-4pirt_firmware	𝑥 < 5.5.0
siemens	scalance_x201-3pirt_firmware	𝑥 < 5.5.0
siemens	scalance_x202-2irt_firmware	𝑥 < 5.5.0
siemens	scalance_x202-2pirt_firmware	𝑥 < 5.5.0
siemens	scalance_x202-2pirt_siplus_net_firmware	𝑥 < 5.5.0
siemens	scalance_x204irt_firmware	𝑥 < 5.5.0
siemens	scalance_x307-3_firmware	*
siemens	scalance_x307-3ld_firmware	*
siemens	scalance_x308-2_firmware	*
siemens	scalance_x308-2ld_firmware	*
siemens	scalance_x308-2lh_firmware	*
siemens	scalance_x308-2lh\+_firmware	*
siemens	scalance_x308-2m_firmware	*
siemens	scalance_x308-2m_ts_firmware	*
siemens	scalance_x310_firmware	*
siemens	scalance_x310fe_firmware	*
siemens	scalance_x320-1fe_firmware	*
siemens	scalance_x320-3ldfe_firmware	*
siemens	scalance_xb205-3_firmware	𝑥 < 5.2.5
siemens	scalance_xb205-3ld_firmware	𝑥 < 5.2.5
siemens	scalance_xb208_firmware	𝑥 < 5.2.5
siemens	scalance_xb213-3_firmware	𝑥 < 5.2.5
siemens	scalance_xb213-3ld_firmware	𝑥 < 5.2.5
siemens	scalance_xb216_firmware	𝑥 < 5.2.5
siemens	scalance_xc206-2_firmware	𝑥 < 5.2.5
siemens	scalance_xc206-2g_poe__firmware	𝑥 < 5.2.5
siemens	scalance_xc206-2g_poe_eec_firmware	𝑥 < 5.2.5
siemens	scalance_xc206-2sfp_firmware	𝑥 < 5.2.5
siemens	scalance_xc206-2sfp_eec_firmware	𝑥 < 5.2.5
siemens	scalance_xc206-2sfp_g_firmware	𝑥 < 5.2.5
siemens	scalance_xc206-2sfp_g_\(e\/ip\)_firmware	𝑥 < 5.2.5
siemens	scalance_xc206-2sfp_g_eec_firmware	𝑥 < 5.2.5
siemens	scalance_xc208_firmware	𝑥 < 5.2.5
siemens	scalance_xc208eec_firmware	𝑥 < 5.2.5
siemens	scalance_xc208g_firmware	𝑥 < 5.2.5
siemens	scalance_xc208g_\(e\/ip\)_firmware	𝑥 < 5.2.5
siemens	scalance_xc208g_eec_firmware	𝑥 < 5.2.5
siemens	scalance_xc208g_poe_firmware	𝑥 < 5.2.5
siemens	scalance_xc216_firmware	𝑥 < 5.2.5
siemens	scalance_xc216-4c_firmware	𝑥 < 5.2.5
siemens	scalance_xc216-4c_g_firmware	𝑥 < 5.2.5
siemens	scalance_xc216-4c_g_\(e\/ip\)_firmware	𝑥 < 5.2.5
siemens	scalance_xc216-4c_g_eec_firmware	𝑥 < 5.2.5
siemens	scalance_xc216eec_firmware	𝑥 < 5.2.5
siemens	scalance_xc224-4c_g__firmware	𝑥 < 5.2.5
siemens	scalance_xc224-4c_g_\(e\/ip\)_firmware	𝑥 < 5.2.5
siemens	scalance_xc224-4c_g_eec_firmware	𝑥 < 5.2.5
siemens	scalance_xc224__firmware	𝑥 < 5.2.5
siemens	scalance_xf201-3p_irt_firmware	𝑥 < 5.2.5
siemens	scalance_xf202-2p_irt_firmware	𝑥 < 5.2.5
siemens	scalance_xf204_firmware	𝑥 < 5.2.5
siemens	scalance_xf204-2_firmware	𝑥 < 5.2.5
siemens	scalance_xf204-2ba_dna_firmware	𝑥 < 5.2.5
siemens	scalance_xf204-2ba_irt_firmware	𝑥 < 5.2.5
siemens	scalance_xf204_dna_firmware	𝑥 < 5.2.5
siemens	scalance_xf204irt_firmware	𝑥 < 5.2.5
siemens	scalance_xf206-1_firmware	𝑥 < 5.2.5
siemens	scalance_xf208_firmware	𝑥 < 5.2.5
siemens	scalance_xp208_firmware	𝑥 < 5.2.5
siemens	scalance_xp208_\(eip\)_firmware	𝑥 < 5.2.5
siemens	scalance_xp208eec_firmware	𝑥 < 5.2.5
siemens	scalance_xp208poe_eec_firmware	𝑥 < 5.2.5
siemens	scalance_xp216_firmware	𝑥 < 5.2.5
siemens	scalance_xp216_\(eip\)_firmware	𝑥 < 5.2.5
siemens	scalance_xp216eec_firmware	𝑥 < 5.2.5
siemens	scalance_xp216poe_eec_firmware	𝑥 < 5.2.5

𝑥

= Vulnerable software versions

Common Weakness Enumeration

References

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

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

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

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