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CVE-2019-1846— Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers MPLS OAM 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 ASR 9000 Series是美国思科（Cisco）公司的一款9000系列企业级路由器。Cisco IOS XR是一套Cisco为其网络设备开发的操作系统。 Cisco ASR 9000 Series中的Cisco IOS XR 5.3.3 Service Pack 10版本存在输入验证错误漏洞。该漏洞源于网络系统或产品未对输入的数据进行正确的验证。

AI Predicted 7.5 Difficulty: Easy EPSS 0.60% · P47

Possible ATT&CK Techniques 1 AI

T1088.002
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I. Basic Information for CVE-2019-1846

Vulnerability Information
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Vulnerability Title
Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers MPLS OAM Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Multiprotocol Label Switching (MPLS) Operations, Administration, and Maintenance (OAM) implementation of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, adjacent attacker to trigger a denial of service (DoS) condition on an affected device. The vulnerability is due to the incorrect handling of certain MPLS OAM packets. An attacker could exploit this vulnerability by sending malicious MPLS OAM packets to an affected device. A successful exploit could allow the attacker to cause the lspv_server process to crash. The crash could lead to system instability and the inability to process or forward traffic though the device, resulting in a DoS condition that require manual intervention to restore normal operating conditions.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco ASR 9000 Series IOS XR 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco ASR 9000 Series是美国思科（Cisco）公司的一款9000系列企业级路由器。Cisco IOS XR是一套Cisco为其网络设备开发的操作系统。 Cisco ASR 9000 Series中的Cisco IOS XR 5.3.3 Service Pack 10版本存在输入验证错误漏洞。该漏洞源于网络系统或产品未对输入的数据进行正确的验证。
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 unspecified ~ n/a -

II. Public POCs for CVE-2019-1846

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III. Intelligence Information for CVE-2019-1846

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Vendor Advisories for CVE-2019-1846 (1)

Same Patch Batch · Cisco · 2019-05-16 · 18 CVEs total

CVE-2019-1832 Cisco Firepower Threat Defense Software Detection Engine Policy Bypass Vulnerability
CVE-2019-1825 Cisco Prime Infrastructure and Evolved Programmable Network Manager SQL Injection Vulnerab
CVE-2019-1824 Cisco Prime Infrastructure and Evolved Programmable Network Manager SQL Injection Vulnerab
CVE-2019-1823 Cisco Prime Infrastructure and Evolved Programmable Network Manager Remote Code Execution
CVE-2019-1822 Cisco Prime Infrastructure and Evolved Programmable Network Manager Remote Code Execution
CVE-2019-1821 Cisco Prime Infrastructure and Evolved Programmable Network Manager Remote Code Execution
CVE-2019-1820 Cisco Prime Infrastructure and Evolved Programmable Network Manager Path Traversal Vulnera
CVE-2019-1819 Cisco Prime Infrastructure and Evolved Programmable Network Manager Path Traversal Vulnera
CVE-2019-1818 Cisco Prime Infrastructure and Evolved Programmable Network Manager Path Traversal Vulnera
CVE-2019-1780 Cisco FXOS and NX-OS Software Command Injection Vulnerability
CVE-2019-1860 Cisco Unified Intelligence Center Remote File Injection Vulnerability
CVE-2019-1858 Cisco FXOS and NX-OS Software Simple Network Management Protocol Denial of Service Vulnera
CVE-2019-1853 Cisco AnyConnect Secure Mobility Client for Linux Out-of-Bounds Memory Read Vulnerability
CVE-2019-1851 Cisco Identity Services Engine Arbitrary Client Certificate Creation Vulnerability
CVE-2019-1849 Cisco IOS XR Software BGP MPLS-Based EVPN Denial of Service Vulnerability
CVE-2019-1833 Cisco Firepower Threat Defense Software SSL/TLS Policy Bypass Vulnerability
CVE-2019-1768 Cisco NX-OS Software Buffer Overflow and Command Injection Vulnerability

IV. Related Vulnerabilities

Same product: Cisco IOS XR Software
Same vendor: Cisco
Same weakness: CWE-20

V. Comments for CVE-2019-1846

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