CVE-2021-21005 Vulnerability Details

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CVE-2021-21005 Metadata Quick Info

CVE Published: 25/06/2021 | CVE Updated: 17/09/2024 | CVE Year: 2021
Source: CERTVDE | Vendor: Phoenix Contact | Product: FL SWITCH
Status : PUBLISHED

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CVE-2021-21005 Description

In Phoenix Contact FL SWITCH SMCS series products in multiple versions if an attacker sends a hand-crafted TCP-Packet with the Urgent-Flag set and the Urgent-Pointer set to 0, the network stack will crash. The device needs to be rebooted afterwards.

Metrics

CVSS Version: 3.1 | Base Score: 7.5 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

l➤ Exploitability Metrics:
    Attack Vector (AV)* NETWORK
    Attack Complexity (AC)* LOW
    Privileges Required (PR)* NONE
    User Interaction (UI)* NONE
    Scope (S)* UNCHANGED

l➤ Impact Metrics:
    Confidentiality Impact (C)* NONE
    Integrity Impact (I)* NONE
    Availability Impact (A)* HIGH

Weakness Enumeration (CWE)

CWE-ID: CWE-362
CWE Name: CWE-362 Race Condition (Concurrent Execution using Shared Resource with Improper Synchronization)
Source: Phoenix Contact

Common Attack Pattern Enumeration and Classification (CAPEC)

CAPEC-ID:
CAPEC Description:


Source: NVD (National Vulnerability Database).