High severity · published Mar 15, 2021
CVE-2021-25667
A vulnerability has been identified in RUGGEDCOM RM1224 (All versions >= V4.3 and < V6.4), SCALANCE M-800 (All versions >= V4.3 and < V6.4), SCALANCE S615 (All versions >= V4.3…
8.8
CVSS
1%
EPSS
No
On KEV
Description
A vulnerability has been identified in RUGGEDCOM RM1224 (All versions >= V4.3 and < V6.4), SCALANCE M-800 (All versions >= V4.3 and < V6.4), SCALANCE S615 (All versions >= V4.3 and < V6.4), SCALANCE SC-600 Family (All versions >= V2.0 and < V2.1.3), SCALANCE XB-200 (All versions < V4.1), SCALANCE XC-200 (All versions < V4.1), SCALANCE XF-200BA (All versions < V4.1), SCALANCE XM400 (All versions < V6.2), SCALANCE XP-200 (All versions < V4.1), SCALANCE XR-300WG (All versions < V4.1), SCALANCE XR500 (All versions < V6.2). Affected devices contain a stack-based buffer overflow vulnerability in the handling of STP BPDU frames that could allow a remote attacker to trigger a denial-of-service condition or potentially remote code execution. Successful exploitation requires the passive listening feature of the device to be active.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 61% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RR
Ruggedcom Rm1224 Firmware · Siemens
4.3 before 6.4 · source: NVD
SM
Scalance M-800 Firmware · Siemens
4.3 before 6.4 · source: NVD
SS
Scalance S615 Firmware · Siemens
4.3 before 6.4 · source: NVD
SS
Scalance Sc622-2c Firmware · Siemens
through 2.0; 2.1 before 2.1.3 · source: NVD
SS
Scalance Sc632-2c Firmware · Siemens
through 2.0; 2.1 before 2.1.3 · source: NVD
SS
Scalance Sc636-2c Firmware · Siemens
through 2.0; 2.1 before 2.1.3 · source: NVD
SS
Scalance Sc642-2c Firmware · Siemens
through 2.0; 2.1 before 2.1.3 · source: NVD
SS
Scalance Sc646-2c Firmware · Siemens
through 2.0; 2.1 before 2.1.3 · source: NVD
SX
Scalance X300wg Firmware · Siemens
before 4.1 · source: NVD
SX
Scalance Xb-200 Firmware · Siemens
before 4.1 · source: NVD
SX
Scalance Xc-200 Firmware · Siemens
before 4.1 · source: NVD
SX
Scalance Xf-200ba Firmware · Siemens
before 4.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-25667
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-25667
Patch
https://cert-portal.siemens.com/productcert/pdf/ssa-979775.pdf
Patch
https://us-cert.cisa.gov/ics/advisories/icsa-21-068-03
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