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.
problem types: CWE-940: Improper Verification of Source of a Communication Channel
affected:
{
vendor: Siemens
product: SIMATIC CP 343-1
versions:
status: affected, version: All versions
defaultStatus: unknown
}
{
vendor: Siemens
product: SIMATIC CP 343-1 Lean
versions:
status: affected, version: All versions
defaultStatus: unknown
}
{
vendor: Siemens
product: SIPLUS NET CP 343-1
versions:
status: affected, version: All versions
defaultStatus: unknown
}
{
vendor: Siemens
product: SIPLUS NET CP 343-1 Lean
versions:
status: affected, version: All versions
defaultStatus: unknown
}
metrics:
cvssV3_1: [
version: 3.1
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:T/RC:C
baseScore: 7.5
baseSeverity: HIGH
]