CVE-2019-1909— Cisco IOS XR Software Border Gateway Protocol Denial of Service Vulnerability
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I. Basic Information for CVE-2019-1909
Vulnerability Information
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Vulnerability Title
Cisco IOS XR Software Border Gateway Protocol Denial of Service Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the implementation of Border Gateway Protocol (BGP) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected system. The vulnerability is due to incorrect processing of certain BGP update messages. An attacker could exploit this vulnerability by sending BGP update messages that include a specific set of attributes to be processed by an affected system. 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 traffic from explicitly defined peers only. To exploit this vulnerability, the malicious BGP update message would need to come from a configured, valid BGP peer or would need to be injected by the attacker into the victim's BGP network on an existing, valid TCP connection to a BGP peer.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco IOS XR 输入验证错误漏洞
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中的Border Gateway Protocol (BGP)功能存在输入验证错误漏洞，该漏洞源于程序没有正确处理BGP更新消息。远程攻击者可通过发送BGP更新消息利用该漏洞造成拒绝服务。
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
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Cisco | Cisco IOS XR Software | unspecified ~ 6.4.2 | - |
II. Public POCs for CVE-2019-1909
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-iosxr-bgp-dosvendor-advisoryx_refsource_CISCO
- https://nvd.nist.gov/vuln/detail/CVE-2019-1909
Same Patch Batch · Cisco · 2019-07-06 · 13 CVEs total
| CVE-2019-1930 | Cisco Firepower Management Center RSS Cross-Site Scripting Vulnerabilities | |
| CVE-2019-1931 | Cisco Firepower Management Center RSS Cross-Site Scripting Vulnerabilities | |
| CVE-2019-1932 | Cisco Advanced Malware Protection for Endpoints Windows Command Injection Vulnerability | |
| CVE-2019-1933 | Cisco Email Security Appliance Content Filter Bypass Vulnerability | |
| CVE-2019-1921 | Cisco Email Security Appliance Content Filter Bypass Vulnerability | |
| CVE-2019-1922 | Cisco IP Phone 7800 and 8800 Series Session Initiation Protocol Denial of Service Vulnerab | |
| CVE-2019-1893 | Cisco Enterprise NFV Infrastructure Software Command Injection Vulnerability | |
| CVE-2019-1894 | Cisco Enterprise NFV Infrastructure Software Arbitrary File Read and Write Vulnerability | |
| CVE-2019-1911 | Cisco Unified Communications Domain Manager Restricted Shell Escape Vulnerability | |
| CVE-2019-1887 | Cisco Unified Communications Manager Session Initiation Protocol Denial of Service Vulnera | |
| CVE-2019-1891 | Cisco Small Business Series Switches HTTP Denial of Service Vulnerability | |
| CVE-2019-1892 | Cisco Small Business Series Switches Memory Corruption Vulnerability |
IV. Related Vulnerabilities
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Cisco IOS XR Software CLI Privilege Escalation Vulnerability - CVE-2025-20340
Cisco IOS XR Address Resolution Protocol Broadcast Storm Vul
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Same weakness: CWE-20
V. Comments for CVE-2019-1909
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