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CVE-2024-20318

Quick assessment

Affected
Cisco Cisco IOS XR Software
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cisco IOS XR是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。 Cisco IOS XR 存在安全漏洞，该漏洞源于第 2 层以太网服务在存在安全漏洞，允许未经身份验证的相邻攻击者导致线卡网络处理器重置，从而导致拒绝服务，以下产品和版本受到影响：ASR 9000 Series Aggregation Services Routers that have a Lightspeed-based or Lightspeed-Plus-based line card installed、AS

CVSS 7.4 · High EPSS 0.33% · P24
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I. Basic Information for CVE-2024-20318

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Layer 2 Ethernet services of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause the line card network processor to reset, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of specific Ethernet frames that are received on line cards that have the Layer 2 services feature enabled. An attacker could exploit this vulnerability by sending specific Ethernet frames through an affected device. A successful exploit could allow the attacker to cause the ingress interface network processor to reset, resulting in a loss of traffic over the interfaces that are supported by the network processor. Multiple resets of the network processor would cause the line card to reset, resulting in a DoS condition.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco IOS XR 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS XR是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。 Cisco IOS XR 存在安全漏洞，该漏洞源于第 2 层以太网服务在存在安全漏洞，允许未经身份验证的相邻攻击者导致线卡网络处理器重置，从而导致拒绝服务，以下产品和版本受到影响：ASR 9000 Series Aggregation Services Routers that have a Lightspeed-based or Lightspeed-Plus-based line card installed、AS
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Cisco Cisco IOS XR Software 6.5.2 -

II. Public POCs for CVE-2024-20318

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III. Intelligence Information for CVE-2024-20318

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Vendor Advisories for CVE-2024-20318 (1)

Same Patch Batch · Cisco · 2024-03-13 · 8 CVEs total

CVE-2024-20320 7.8 HIGH Cisco IOS XR 安全漏洞
CVE-2024-20327 7.4 HIGH Cisco ASR 9000 安全漏洞
CVE-2024-20262 6.5 MEDIUM Cisco IOS XR 安全漏洞
CVE-2024-20315 5.8 MEDIUM Cisco IOS XR 安全漏洞
CVE-2024-20322 5.8 MEDIUM Cisco IOS XR 安全漏洞
CVE-2024-20266 5.3 MEDIUM Cisco IOS XR Software 安全漏洞
CVE-2024-20319 4.3 MEDIUM Cisco IOS XR 安全漏洞

IV. Related Vulnerabilities

Same product: Cisco IOS XR Software
Same vendor: Cisco
Same weakness: CWE-20

V. Comments for CVE-2024-20318

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