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CVE-2024-20304— Cisco IOS XR Software Packet Memory Exhaustion 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 Mtrace2 代码无法正确处理数据包内存。

CVSS 8.6 · High EPSS 0.60% · P47

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2024-20304

Vulnerability Information
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Vulnerability Title
Cisco IOS XR Software Packet Memory Exhaustion Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the multicast traceroute version 2 (Mtrace2) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to exhaust the UDP packet memory of an affected device. This vulnerability exists because the Mtrace2 code does not properly handle packet memory. An attacker could exploit this vulnerability by sending crafted packets to an affected device. A successful exploit could allow the attacker to exhaust the incoming UDP packet memory. The affected device would not be able to process higher-level UDP-based protocols packets, possibly causing a denial of service (DoS) condition. Note: This vulnerability can be exploited using IPv4 or IPv6.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在移除最后引用时对内存的释放不恰当(内存泄露)
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 Mtrace2 代码无法正确处理数据包内存。
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 7.8.1 -

II. Public POCs for CVE-2024-20304

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III. Intelligence Information for CVE-2024-20304

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Vendor Advisories for CVE-2024-20304 (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-2024-20489 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
CVE-2024-20390 5.3 MEDIUM Cisco IOS XR Software Dedicated XML Agent TCP Denial of Service Vulnerability

IV. Related Vulnerabilities

Same product: Cisco IOS XR Software
Same vendor: Cisco
Same weakness: CWE-401

V. Comments for CVE-2024-20304

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