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Vulnerability · Published Jun 14, 2022 · Assigned by siemens

CVE-2021-37182

High 7.5

In plain English

A high-severity security flaw in SCALANCE XM408-4C from Siemens. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 51% of all known vulnerabilities).

Severity (CVSS NVD)7.5High
Exploit odds (30 days)0.6%top 48.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

A vulnerability has been identified in SCALANCE XM408-4C (All versions < V6.5), SCALANCE XM408-4C (L3 int.) (All versions < V6.5), SCALANCE XM408-8C (All versions < V6.5), SCALANCE XM408-8C (L3 int.) (All versions < V6.5), SCALANCE XM416-4C (All versions < V6.5), SCALANCE XM416-4C (L3 int.) (All versions < V6.5), SCALANCE XR524-8C, 1x230V (All versions < V6.5), SCALANCE XR524-8C, 1x230V (L3 int.) (All versions < V6.5), SCALANCE XR524-8C, 24V (All versions < V6.5), SCALANCE XR524-8C, 24V (L3 int.) (All versions < V6.5), SCALANCE XR524-8C, 2x230V (All versions < V6.5), SCALANCE XR524-8C, 2x230V (L3 int.) (All versions < V6.5), SCALANCE XR526-8C, 1x230V (All versions < V6.5), SCALANCE XR526-8C, 1x230V (L3 int.) (All versions < V6.5), SCALANCE XR526-8C, 24V (All versions < V6.5), SCALANCE XR526-8C, 24V (L3 int.) (All versions < V6.5), SCALANCE XR526-8C, 2x230V (All versions < V6.5), SCALANCE XR526-8C, 2x230V (L3 int.) (All versions < V6.5), SCALANCE XR528-6M (All versions < V6.5), SCALANCE XR528-6M (2HR2) (All versions < V6.5), SCALANCE XR528-6M (2HR2, L3 int.) (All versions < V6.5), SCALANCE XR528-6M (L3 int.) (All versions < V6.5), SCALANCE XR552-12M (All versions < V6.5), SCALANCE XR552-12M (2HR2) (All versions < V6.5), SCALANCE XR552-12M (2HR2) (All versions < V6.5), SCALANCE XR552-12M (2HR2, L3 int.) (All versions < V6.5). The OSPF protocol implementation in affected devices fails to verify the checksum and length fields in the OSPF LS Update messages. An unauthenticated remote attacker could exploit this vulnerability to cause interruptions in the network by sending specially crafted OSPF packets. Successful exploitation requires OSPF to be enabled on an affected device.

Affected products (as reported)

VendorProductVersions
Siemens SCALANCE XM408-4C All versions < V6.5
Siemens SCALANCE XM408-4C (L3 int.) All versions < V6.5
Siemens SCALANCE XM408-8C All versions < V6.5
Siemens SCALANCE XM408-8C (L3 int.) All versions < V6.5
Siemens SCALANCE XM416-4C All versions < V6.5
Siemens SCALANCE XM416-4C (L3 int.) All versions < V6.5
Siemens SCALANCE XR524-8C, 1x230V All versions < V6.5
Siemens SCALANCE XR524-8C, 1x230V (L3 int.) All versions < V6.5
Siemens SCALANCE XR524-8C, 24V All versions < V6.5
Siemens SCALANCE XR524-8C, 24V (L3 int.) All versions < V6.5
Siemens SCALANCE XR524-8C, 2x230V All versions < V6.5
Siemens SCALANCE XR524-8C, 2x230V (L3 int.) All versions < V6.5
Siemens SCALANCE XR526-8C, 1x230V All versions < V6.5
Siemens SCALANCE XR526-8C, 1x230V (L3 int.) All versions < V6.5
Siemens SCALANCE XR526-8C, 24V All versions < V6.5
Siemens SCALANCE XR526-8C, 24V (L3 int.) All versions < V6.5
Siemens SCALANCE XR526-8C, 2x230V All versions < V6.5
Siemens SCALANCE XR526-8C, 2x230V (L3 int.) All versions < V6.5
Siemens SCALANCE XR528-6M All versions < V6.5
Siemens SCALANCE XR528-6M (2HR2) All versions < V6.5
Siemens SCALANCE XR528-6M (2HR2, L3 int.) All versions < V6.5
Siemens SCALANCE XR528-6M (L3 int.) All versions < V6.5
Siemens SCALANCE XR552-12M All versions < V6.5
Siemens SCALANCE XR552-12M (2HR2) All versions < V6.5
Siemens SCALANCE XR552-12M (2HR2) All versions < V6.5
Siemens SCALANCE XR552-12M (2HR2, L3 int.) All versions < V6.5

Weakness: CWE-354

References