CVE-2019-16020

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Summary

CVECVE-2019-16020
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-01-26 05:15:00 UTC
Updated2020-01-29 18:16:00 UTC
DescriptionMultiple 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 victim's BGP network on an existing, valid TCP connection to a BGP peer.

Risk And Classification

Problem Types: CWE-400

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Cisco Asr 9000v - All All All
Hardware Cisco Asr 9000v - All All All
Hardware Cisco Asr 9000v - All All All
Hardware Cisco Asr 9000v - All All All
Hardware Cisco Asr 9001 - All All All
Hardware Cisco Asr 9001 - All All All
Hardware Cisco Asr 9001 - All All All
Hardware Cisco Asr 9001 - All All All
Hardware Cisco Asr 9006 - All All All
Hardware Cisco Asr 9006 - All All All
Hardware Cisco Asr 9006 - All All All
Hardware Cisco Asr 9006 - All All All
Hardware Cisco Asr 9010 - All All All
Hardware Cisco Asr 9010 - All All All
Hardware Cisco Asr 9010 - All All All
Hardware Cisco Asr 9010 - All All All
Hardware Cisco Asr 9901 - All All All
Hardware Cisco Asr 9901 - All All All
Hardware Cisco Asr 9901 - All All All
Hardware Cisco Asr 9901 - All All All
Hardware Cisco Asr 9904 - All All All
Hardware Cisco Asr 9904 - All All All
Hardware Cisco Asr 9904 - All All All
Hardware Cisco Asr 9904 - All All All
Hardware Cisco Asr 9906 - All All All
Hardware Cisco Asr 9906 - All All All
Hardware Cisco Asr 9906 - All All All
Hardware Cisco Asr 9906 - All All All
Hardware Cisco Asr 9910 - All All All
Hardware Cisco Asr 9910 - All All All
Hardware Cisco Asr 9910 - All All All
Hardware Cisco Asr 9910 - All All All
Hardware Cisco Asr 9912 - All All All
Hardware Cisco Asr 9912 - All All All
Hardware Cisco Asr 9912 - All All All
Hardware Cisco Asr 9912 - All All All
Hardware Cisco Asr 9922 - All All All
Hardware Cisco Asr 9922 - All All All
Hardware Cisco Asr 9922 - All All All
Hardware Cisco Asr 9922 - All All All
Hardware Cisco Crs - All All All
Hardware Cisco Crs - All All All
Operating System Cisco Ios Xr 6.6.1 All All All
Operating System Cisco Ios Xr 6.6.2 All All All
Operating System Cisco Ios Xr 6.6.25 All All All
Operating System Cisco Ios Xr 7.0.1 All All All
Operating System Cisco Ios Xr 6.6.1 All All All
Operating System Cisco Ios Xr 6.6.2 All All All
Operating System Cisco Ios Xr 6.6.25 All All All
Operating System Cisco Ios Xr 7.0.1 All All All
Hardware Cisco Ncs 1001 - All All All
Hardware Cisco Ncs 1001 - All All All
Hardware Cisco Ncs 1002 - All All All
Hardware Cisco Ncs 1002 - All All All
Hardware Cisco Ncs 1004 - All All All
Hardware Cisco Ncs 1004 - All All All
Hardware Cisco Ncs 5001 - All All All
Hardware Cisco Ncs 5001 - All All All
Hardware Cisco Ncs 5002 - All All All
Hardware Cisco Ncs 5002 - All All All
Hardware Cisco Ncs 540 - All All All
Hardware Cisco Ncs 540 - All All All
Hardware Cisco Ncs 540l - All All All
Hardware Cisco Ncs 540l - All All All
Hardware Cisco Ncs 5501 - All All All
Hardware Cisco Ncs 5501 - All All All
Hardware Cisco Ncs 5501-se - All All All
Hardware Cisco Ncs 5501-se - All All All
Hardware Cisco Ncs 5502 - All All All
Hardware Cisco Ncs 5502 - All All All
Hardware Cisco Ncs 5502-se - All All All
Hardware Cisco Ncs 5502-se - All All All
Hardware Cisco Ncs 5508 - All All All
Hardware Cisco Ncs 5508 - All All All
Hardware Cisco Ncs 5516 - All All All
Hardware Cisco Ncs 5516 - All All All
Hardware Cisco Ncs 560 - All All All
Hardware Cisco Ncs 560 - All All All
Hardware Cisco Ncs 6000 - All All All
Hardware Cisco Ncs 6000 - All All All
Hardware Cisco Xrv 9000 - All All All
Hardware Cisco Xrv 9000 - All All All

References

ReferenceSourceLinkTags
Cisco IOS XR Software BGP EVPN Denial of Service Vulnerabilities CISCO tools.cisco.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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