Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1000 CNY

100.0%
Buy Us a Coffee

CVE-2022-20758— Cisco IOS XR Software Border Gateway Protocol Ethernet VPN Denial of Service Vulnerability

CVSS 6.8 · Medium EPSS 0.36% · P58
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2022-20758

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Cisco IOS XR Software Border Gateway Protocol Ethernet VPN Denial of Service Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the implementation of the Border Gateway Protocol (BGP) Ethernet VPN (EVPN) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. This vulnerability is due to the incorrect processing of a BGP update message that contains specific EVPN attributes. An attacker could exploit this vulnerability by sending a BGP update message that contains specific EVPN attributes. To exploit this vulnerability, an attacker must control a BGP speaker that has an established trusted peer connection to an affected device that is configured with the address family L2VPN EVPN to receive and process the update message. This vulnerability cannot be exploited by any data that is initiated by clients on the Layer 2 network or by peers that are not configured to accept the L2VPN EVPN address family. A successful exploit could allow the attacker to cause the BGP process to restart unexpectedly, resulting in a DoS condition. The Cisco implementation of BGP accepts incoming BGP updates only from explicitly defined peers. For this vulnerability to be exploited, the malicious BGP update message must either come from a configured, valid BGP peer or be injected by the attacker into the affected BGP network on an existing, valid TCP connection to a BGP peer.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
资源管理错误
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco IOS XR资源管理错误漏洞
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存在资源管理错误漏洞，该漏洞源于BGP Ethernet VPN导致Cisco IOS XR致命错误，从而触发拒绝服务。
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

VendorProductAffected VersionsCPESubscribe
CiscoCisco IOS XR Software n/a -

II. Public POCs for CVE-2022-20758

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2022-20758

请登录查看更多情报信息。

Same Patch Batch · Cisco · 2022-04-15 · 34 CVEs total

CVE-2022-2069510.0 CRITICALCisco Wireless LAN Controller Management Interface Authentication Bypass Vulnerability
CVE-2022-206228.6 HIGHCisco Embedded Wireless Controller with Catalyst Access Points IP Flood Denial of Service
CVE-2022-206788.6 HIGHCisco IOS XE Software AppNav-XE Denial of Service Vulnerability
CVE-2022-207148.6 HIGHCisco IOS XR Software for ASR 9000 Series Routers Lightspeed-Plus Line Cards Denial of Ser
CVE-2022-206978.6 HIGHCisco IOS and IOS XE Software Web Services Denial of Service Vulnerability
CVE-2022-206828.6 HIGHCisco IOS XE Wireless Controller Software for the Catalyst 9000 Family CAPWAP Denial of Se
CVE-2022-206838.6 HIGHCisco IOS XE Software for Catalyst 9800 Series Wireless Controllers Application Visibility
CVE-2022-207167.8 HIGHCisco SD-WAN Solution Improper Access Control Vulnerability
CVE-2022-206817.8 HIGHCisco IOS XE Software for Cisco Catalyst 9000 Family Switches and Catalyst 9000 Family Wir
CVE-2022-206927.7 HIGHCisco IOS XE Software NETCONF Over SSH Denial of Service Vulnerability
CVE-2022-206847.4 HIGHCisco IOS XE Wireless Controller Software for the Catalyst 9000 Family SNMP Trap Denial of
CVE-2022-207617.4 HIGHCisco 1000 Series Connected Grid Router Integrated Wireless Access Point Denial of Service
CVE-2022-207397.3 HIGHCisco SD-WAN vManage Software Privilege Escalation Vulnerability
CVE-2022-206946.8 MEDIUMCisco IOS XE Software Border Gateway Protocol Resource Public Key Infrastructure Denial of
CVE-2022-206796.8 MEDIUMCisco IOS XE Software IPSec Denial of Service Vulnerability
CVE-2022-207356.5 MEDIUMCisco SD-WAN vManage Software Cross-Site Request Forgery Vulnerability
CVE-2022-207476.5 MEDIUMCisco SD-WAN vManage Software Information Disclosure Vulnerability
CVE-2022-207265.5 MEDIUMCisco IOx Application Hosting Environment Vulnerabilities
CVE-2022-206775.5 MEDIUMCisco IOx Application Hosting Environment Vulnerabilities
CVE-2022-207255.5 MEDIUMCisco IOx Application Hosting Environment Vulnerabilities

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-399

V. Comments for CVE-2022-20758

No comments yet

Leave a comment