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High severity · published Feb 13, 2024
CVE-2023-51440
A vulnerability has been identified in SIMATIC CP 343-1 (6GK7343-1EX30-0XE0) (All versions), SIMATIC CP 343-1 Lean (6GK7343-1CX10-0XE0) (All versions), SIPLUS NET CP 343-1…
7.5
CVSS
0.6%
EPSS
No
On KEV
Description
A vulnerability has been identified in SIMATIC CP 343-1 (6GK7343-1EX30-0XE0) (All versions), SIMATIC CP 343-1 Lean (6GK7343-1CX10-0XE0) (All versions), SIPLUS NET CP 343-1 (6AG1343-1EX30-7XE0) (All versions), SIPLUS NET CP 343-1 Lean (6AG1343-1CX10-2XE0) (All versions). Affected products incorrectly validate TCP sequence numbers. This could allow an unauthenticated remote attacker to create a denial of service condition by injecting spoofed TCP RST packets.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SC
Simatic CP 343-1 Firmware · Siemens
All versions, or not specified · source: NVD
SC
Simatic CP 343-1 Lean Firmware · Siemens
All versions, or not specified · source: NVD
SN
Siplus Net CP 343-1 Firmware · Siemens
All versions, or not specified · source: NVD
SN
Siplus Net CP 343-1 Lean Firmware · Siemens
All versions, or not specified · source: NVD
Affected product
SC
Simatic CP 343-1 Firmware
Siemens
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-51440
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-51440
Vendor Advisory
https://cert-portal.siemens.com/productcert/html/ssa-516818.html
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