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CVE-2020-3569— Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerabilities

Quick assessment

Affected
Cisco Cisco IOS XR Software
Exploitation
Confirmed exploitation in the wild; remediate immediately
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cisco IOS和Cisco IOS XR都是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。 Cisco IOS和Cisco IOS XR 中存在资源管理错误漏洞。该漏洞源于网络系统或产品对系统资源（如内存、磁盘空间、文件等）的管理不当。

CVSS 8.6 · High KEV EPSS 3.32% · P88

Possible ATT&CK Techniques 1 AI

T1498 · Network Denial of Service
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I. Basic Information for CVE-2020-3569

Vulnerability Information
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Vulnerability Title
Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerabilities
Source: CVE Program / CVE List V5
Vulnerability Description
Multiple vulnerabilities in the Distance Vector Multicast Routing Protocol (DVMRP) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to either immediately crash the Internet Group Management Protocol (IGMP) process or make it consume available memory and eventually crash. The memory consumption may negatively impact other processes that are running on the device. These vulnerabilities are due to the incorrect handling of IGMP packets. An attacker could exploit these vulnerabilities by sending crafted IGMP traffic to an affected device. A successful exploit could allow the attacker to immediately crash the IGMP process or cause memory exhaustion, resulting in other processes becoming unstable. These processes may include, but are not limited to, interior and exterior routing protocols. Cisco will release software updates that address these vulnerabilities.
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
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco IOS XR 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS和Cisco IOS XR都是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。 Cisco IOS和Cisco IOS XR 中存在资源管理错误漏洞。该漏洞源于网络系统或产品对系统资源（如内存、磁盘空间、文件等）的管理不当。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Cisco Cisco IOS XR Software n/a -

II. Public POCs for CVE-2020-3569

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III. Intelligence Information for CVE-2020-3569

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Same Patch Batch · Cisco · 2020-09-23 · 34 CVEs total

CVE-2020-3116 Cisco Webex Centers Denial of Service Vulnerability
CVE-2019-16021 Cisco IOS XR Software BGP EVPN Denial of Service Vulnerabilities
CVE-2019-16023 Cisco IOS XR Software BGP EVPN Denial of Service Vulnerabilities
CVE-2019-16025 Cisco Emergency Responder Stored Cross-Site Scripting Vulnerability
CVE-2019-16028 Cisco Firepower Management Center Lightweight Directory Access Protocol Authentication Byp
CVE-2019-1736 Multiple Cisco UCS-Based Products UEFI Secure Boot Bypass Vulnerability
CVE-2019-1888 Cisco Unified Contact Center Express Privilege Escalation Vulnerability
CVE-2019-1947 Cisco Email Security Appliance Denial of Service Vulnerability
CVE-2019-1983 Cisco Email Security Appliance and Cisco Content Security Management Appliance Denial of S
CVE-2019-16019 Cisco IOS XR Software BGP EVPN Denial of Service Vulnerabilities
CVE-2020-3117 Cisco Web Security Appliance and Cisco Content Security Management Appliance HTTP Header I
CVE-2020-3124 Cisco Hosted Collaboration Mediation Fulfillment Cross-Site Request Forgery Vulnerability
CVE-2020-3130 Cisco Unity Connection Directory Traversal Vulnerability
CVE-2020-3133 Cisco Email Security Appliance Content Filter Bypass Vulnerability
CVE-2020-3135 Cisco Unified Communications Manager Cross-Site Request Forgery Vulnerability
CVE-2020-3137 Cisco Email Security Appliance Cross-Site Scripting Vulnerability
CVE-2020-3143 Cisco TelePresence Collaboration Endpoint, TelePresence Codec, and RoomOS Software Path Tr
CVE-2019-15283 Cisco Webex Network Recording Player and Cisco Webex Player Arbitrary Code Execution Vulne
CVE-2019-16017 Cisco Unified Customer Voice Portal Insecure Direct Object Reference Vulnerability
CVE-2019-16009 Cisco IOS and Cisco IOS XE Software Web UI Cross-Site Request Forgery Vulnerability

Showing top 20 of 34 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Cisco IOS XR Software
Same vendor: Cisco
Same weakness: CWE-400

V. Comments for CVE-2020-3569

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