CVE-2021-33720

  1. Reconshell
  2. Vulnerabilities (CVE)
  3. CVE-2021-33720
A vulnerability has been identified in SIPROTEC 5 relays with CPU variants CP050 (All versions < V8.80), SIPROTEC 5 relays with CPU variants CP100 (All versions < V8.80), SIPROTEC 5 relays with CPU variants CP300 (All versions < V8.80). Specially crafted packets sent to port 4443/tcp could cause a Denial-of-Service condition.

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0 /10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References
Link Resource
https://cert-portal.siemens.com/productcert/pdf/ssa-847986.pdf Patch Vendor Advisory
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Configurations

Configuration 1 (hide)

OR cpe:2.3:o:siemens:siprotec_5_with_cpu_variant_cp050:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:siprotec_5_with_cpu_variant_cp100:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:siprotec_5_with_cpu_variant_cp300:*:*:*:*:*:*:*:*
Information

Published : 2021-09-14 04:15

Updated : 2021-12-14 12:58

NVD link : CVE-2021-33720

Mitre link : CVE-2021-33720

JSON object : View

CWE
CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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Products Affected

siemens

  • siprotec_5_with_cpu_variant_cp100
  • siprotec_5_with_cpu_variant_cp050
  • siprotec_5_with_cpu_variant_cp300