CVE-2023-20049


2023. március 17. 13:11

cisco / ios xr, Cisco IOS_XR sérülékenysége
Angol cím: cisco / ios xr, Cisco IOS_XR vulnerability

Publikálás dátuma: 2023.03.09.
Utolsó módosítás dátuma: 2023.03.16.

Leírás

Puffer hibák: A program a tervezett memória puffer hátárán kívüli helyeken végezhet műveleteket.

Leírás forrása: CWE-119

Elemzés leírás

Eredeti nyelven: A vulnerability in the bidirectional forwarding detection (BFD) hardware offload feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers, ASR 9902 Compact High-Performance Routers, and ASR 9903 Compact High-Performance Routers could allow an unauthenticated, remote attacker to cause a line card to reset, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of malformed BFD packets that are received on line cards where the BFD hardware offload feature is enabled. An attacker could exploit this vulnerability by sending a crafted IPv4 BFD packet to an affected device. A successful exploit could allow the attacker to cause line card exceptions or a hard reset, resulting in loss of traffic over that line card while the line card reloads.

Elemzés leírás forrása: CVE-2023-20049

Hatás

CVSS3.1 Súlyosság és Metrika

Base score: 7.5 (Magas)
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 3.9

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality Impact (C): None
Integrity Impact (I): None
Availability Impact (A): High

Hivatkozások

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-bfd-XmRescbT

Sérülékeny szoftverek

Cisco IOS_XR 7.5.3 előttig
cisco / ios xr 7.6-tól 7.6.2 előttig
cisco / ios xr 7.7

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