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CVE-2024-20390— Cisco IOS XR Software Dedicated XML Agent TCP Denial of Service Vulnerability

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，该漏洞源于缺乏对进入 XML 数据包的正确错误验证。

CVSS 5.3 · Medium EPSS 0.44% · P36

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2024-20390

Vulnerability Information
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Vulnerability Title
Cisco IOS XR Software Dedicated XML Agent TCP Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Dedicated XML Agent feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) on XML TCP listen port 38751. This vulnerability is due to a lack of proper error validation of ingress XML packets. An attacker could exploit this vulnerability by sending a sustained, crafted stream of XML traffic to a targeted device. A successful exploit could allow the attacker to cause XML TCP port 38751 to become unreachable while the attack traffic persists.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
通信信道源的不正确验证
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，该漏洞源于缺乏对进入 XML 数据包的正确错误验证。
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 6.5.3 -

II. Public POCs for CVE-2024-20390

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III. Intelligence Information for CVE-2024-20390

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Vendor Advisories for CVE-2024-20390 (1)

Same Patch Batch · Cisco · 2024-09-11 · 9 CVEs total

CVE-2024-20381 8.8 HIGH Cisco Network Services Orchestrator Configuration Update Authorization Bypass Vulnerabilit
CVE-2024-20398 8.8 HIGH Cisco IOS XR Software Local Privilege Escalation Vulnerability
CVE-2024-20304 8.6 HIGH Cisco IOS XR Software Packet Memory Exhaustion Vulnerability
CVE-2024-20489 8.4 HIGH Cisco Routed Passive Optical Network Cleartext Password Vulnerability
CVE-2024-20406 7.4 HIGH Cisco IOS XR Software Intermediate System-to-Intermediate System Denial of Service Vulnera
CVE-2024-20317 7.4 HIGH Cisco IOS XR Software Layer 2 Services Denial of Service Vulnerability
CVE-2024-20483 7.2 HIGH Cisco IOS XR PON Controller Command Injection Vulnerabilities
CVE-2024-20343 5.5 MEDIUM Cisco IOS XR Software CLI Arbitrary File Read Vulnerability

IV. Related Vulnerabilities

Same product: Cisco IOS XR Software
Same vendor: Cisco
Same weakness: CWE-940

V. Comments for CVE-2024-20390

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