Informazioni sul CVE-2022-20846
Cisco IOS XR Software Cisco Discovery Protocol Buffer Overflow Vulnerability
CWE ID: CWE-120
Base Score (CVSS): N/A
CVE: CVE-2022-20846
Descrizione: A vulnerability in the Cisco Discovery Protocol implementation for Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause the Cisco Discovery Protocol process to reload on an affected device. This vulnerability is due to a heap buffer overflow in certain Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected device. A successful exploit could allow the attacker to cause a heap overflow, which could cause the Cisco Discovery Protocol process to reload on the device. The bytes that can be written in the buffer overflow are restricted, which limits remote code execution.Note: Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent). Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.This advisory is part of the September 2022 release of the Cisco IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see .
Vettore di attacco CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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: Adjacent Network, Privilegi: None, Interazione utente: None, Confidenzialità: None, Integrità: None, Disponibilità: Low.
Dettaglio del Vettore
| Metrica | Valore | Significato | Descrizione |
|---|---|---|---|
| Attack Vector (AV) | A | Adjacent Network | L’attacco richiede accesso a una rete locale condivisa. |
| 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) | N | None | Nessun impatto sulla riservatezza. |
| Integrity Impact (I) | N | None | Nessun impatto sull’integrità. |
| Availability Impact (A) | L | Low | Interferenza limitata. |
Riferimenti esterni
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xr-cdp-wnALzvT2
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-bng-Gmg5Gxt
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ncs4k-tl1-GNnLwC6
Prodotti interessati
- Cisco – Cisco IOS XR Software
Relazioni con altri prodotti
Produttore:Cisco
Prodotto: Cisco IOS XR Software
Anno: 2022
CWE: CWE-120
CVSS: 0.0