CVE-2019-16020
Description
Multiple vulnerabilities in the implementation of 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. The vulnerabilities are due to incorrect processing of BGP update messages that contain crafted EVPN attributes. An attacker could exploit these vulnerabilities by sending BGP EVPN update messages with malformed 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 only from explicitly defined peers. To exploit these vulnerabilities, 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 victims BGP network on an existing, valid TCP connection to a BGP peer.
Risk Information
Associated Vulnerability
| Vulnerability | OS Platform |
|---|---|
| Cisco IOS XR Software BGP EVPN Denial of Service Vulnerabilities For Cisco Carrier Routing System | NCM |
| Cisco IOS XR Software BGP EVPN Denial of Service Vulnerabilities For Cisco ASR 9000 Series Aggregation Services Routers | NCM |
| Cisco IOS XR Software BGP EVPN Denial of Service Vulnerabilities For Cisco Network Convergence System 6000 Series Routers | NCM |
| Cisco IOS XR Software BGP EVPN Denial of Service Vulnerabilities For Cisco IOS XRv 9000 Router | NCM |
| Cisco IOS XR Software BGP EVPN Denial of Service Vulnerabilities For Cisco Network Convergence System 5000 Series | NCM |
| Cisco IOS XR Software BGP EVPN Denial of Service Vulnerabilities For Cisco Network Convergence System 5500 Series | NCM |
| Cisco IOS XR Software BGP EVPN Denial of Service Vulnerabilities For Cisco Network Convergence System 1000 Series | NCM |
| Cisco IOS XR Software BGP EVPN Denial of Service Vulnerabilities For Cisco Network Convergence System 500 Series Routers | NCM |
| Cisco IOS XR Software BGP EVPN Denial of Service Vulnerabilities For Cisco 8000 Series Routers | NCM |
| Uncontrolled Resource Consumption Vulnerability (CVE-2019-16020) | NCM |
Patch Details
Click to see the patches provided by ManageEngine for this CVE
| Patch ID | Patch Description |
|---|---|
| PATCH-1705675 | Security Update for Cisco Carrier Routing System 5.3.1 |
| PATCH-1705564 | Security Update for Cisco ASR 9000 Series Aggregation Services Routers 5.3.0.1i.BASE |
| PATCH-1705630 | Security Update for Cisco Network Convergence System 6000 Series Routers 6.1.4 |
| PATCH-1705219 | Security Update for Cisco IOS XRv 9000 Router 7.1.2.1i.BASE |
| PATCH-1706021 | Security Update for Cisco Network Convergence System 5000 Series 6.2.1.21i.BASE |
| PATCH-1705220 | Security Update for Cisco Network Convergence System 5500 Series 7.1.2.1i.BASE |
| PATCH-1705124 | Security Update for Cisco Network Convergence System 1000 Series 7.2.1.9i.ROUT |
| PATCH-1705229 | Security Update for Cisco Network Convergence System 500 Series Routers 7.2.1.21i.BASE |
| PATCH-1705230 | Security Update for Cisco 8000 Series Routers 7.2.1.21i.BASE |
References
https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234