Informazioni sul CVE-2021-0254
Junos OS: Remote code execution vulnerability in overlayd service
CWE ID: CWE-131
Base Score (CVSS): N/A
CVE: CVE-2021-0254
Descrizione: A buffer size validation vulnerability in the overlayd service of Juniper Networks Junos OS may allow an unauthenticated remote attacker to send specially crafted packets to the device, triggering a partial Denial of Service (DoS) condition, or leading to remote code execution (RCE). Continued receipt and processing of these packets will sustain the partial DoS. The overlayd daemon handles Overlay OAM packets, such as ping and traceroute, sent to the overlay. The service runs as root by default and listens for UDP connections on port 4789. This issue results from improper buffer size validation, which can lead to a buffer overflow. Unauthenticated attackers can send specially crafted packets to trigger this vulnerability, resulting in possible remote code execution. overlayd runs by default in MX Series, ACX Series, and QFX Series platforms. The SRX Series does not support VXLAN and is therefore not vulnerable to this issue. Other platforms are also vulnerable if a Virtual Extensible LAN (VXLAN) overlay network is configured. This issue affects Juniper Networks Junos OS: 15.1 versions prior to 15.1R7-S9; 17.3 versions prior to 17.3R3-S11; 17.4 versions prior to 17.4R2-S13, 17.4R3-S4; 18.1 versions prior to 18.1R3-S12; 18.2 versions prior to 18.2R2-S8, 18.2R3-S7; 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R1-S8, 18.4R2-S7, 18.4R3-S7; 19.1 versions prior to 19.1R2-S2, 19.1R3-S4; 19.2 versions prior to 19.2R1-S6, 19.2R3-S2; 19.3 versions prior to 19.3R3-S1; 19.4 versions prior to 19.4R2-S4, 19.4R3-S1; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R2, 20.2R2-S1, 20.2R3; 20.3 versions prior to 20.3R1-S1.
Vettore di attacco CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Punteggio CVSS
Il CVSS è un sistema di valutazione che misura la gravità di una vulnerabilità informatica considerando fattori come l’impatto potenziale, la probabilità di attacco e la facilità di esecuzione.
Riassunto: Accesso: Network, Privilegi: None, Interazione utente: None, Confidenzialità: High, Integrità: High, Disponibilità: High.
Dettaglio del Vettore
| Metrica | Valore | Significato | Descrizione |
|---|---|---|---|
| Attack Vector (AV) | N | Network | L’attacco può essere eseguito da remoto attraverso la rete. |
| Attack Complexity (AC) | L | Low | L’attacco non richiede condizioni particolari. |
| Privileges Required (PR) | N | None | Non sono richiesti privilegi. |
| User Interaction (UI) | N | None | Non è richiesta interazione dell’utente. |
| Scope (S) | U | Unchanged | Il raggio d’azione non cambia. |
| Confidentiality Impact (C) | H | High | Grave impatto sulla riservatezza. |
| Integrity Impact (I) | H | High | Grave impatto sull’integrità. |
| Availability Impact (A) | H | High | Rende il sistema inutilizzabile. |
Riferimenti esterni
Prodotti interessati
- Juniper Networks – Junos OS
Relazioni con altri prodotti
Produttore:Juniper Networks
Prodotto: Junos OS
Anno: 2021
CWE: CWE-131
CVSS: 0.0