7.8

CVE-2020-3479

A vulnerability in the implementation of Multiprotocol Border Gateway Protocol (MP-BGP) for the Layer 2 VPN (L2VPN) Ethernet VPN (EVPN) address family in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to incorrect processing of Border Gateway Protocol (BGP) update messages that contain crafted EVPN attributes. An attacker could exploit this vulnerability by sending BGP update messages with specific, malformed attributes to an affected device. A successful exploit could allow the attacker to cause an affected device to crash, resulting in a DoS condition.

Data is provided by the National Vulnerability Database (NVD)
Cisco ≫ Ios Version-
   Cisco ≫ 1100 Integrated Services Router Version-
   Cisco ≫ 1101 Integrated Services Router Version-
   Cisco ≫ 1109 Integrated Services Router Version-
   Cisco ≫ 1111x Integrated Services Router Version-
   Cisco ≫ 111x Integrated Services Router Version-
   Cisco ≫ 1120 Integrated Services Router Version-
   Cisco ≫ 1160 Integrated Services Router Version-
   Cisco ≫ 4221 Integrated Services Router Version-
   Cisco ≫ 4321 Integrated Services Router Version-
   Cisco ≫ 4331 Integrated Services Router Version-
   Cisco ≫ 4351 Integrated Services Router Version-
   Cisco ≫ 4431 Integrated Services Router Version-
   Cisco ≫ 4451-x Integrated Services Router Version-
   Cisco ≫ 4461 Integrated Services Router Version-
   Cisco ≫ Asr 1001-hx Version-
   Cisco ≫ Asr 1001-x Version-
   Cisco ≫ Asr 1002-hx Version-
   Cisco ≫ Asr 1002-x Version-
   Cisco ≫ Asr 1004 Version-
   Cisco ≫ Asr 1006 Version-
   Cisco ≫ Asr 1006-x Version-
   Cisco ≫ Asr 1009-x Version-
   Cisco ≫ Asr 1013 Version-
   Cisco ≫ Cloud Services Router 1000v Version-
Cisco ≫ Ios Xe Version-
   Cisco ≫ 1100 Integrated Services Router Version-
   Cisco ≫ 1101 Integrated Services Router Version-
   Cisco ≫ 1109 Integrated Services Router Version-
   Cisco ≫ 1111x Integrated Services Router Version-
   Cisco ≫ 111x Integrated Services Router Version-
   Cisco ≫ 1120 Integrated Services Router Version-
   Cisco ≫ 1160 Integrated Services Router Version-
   Cisco ≫ 4221 Integrated Services Router Version-
   Cisco ≫ 4321 Integrated Services Router Version-
   Cisco ≫ 4331 Integrated Services Router Version-
   Cisco ≫ 4351 Integrated Services Router Version-
   Cisco ≫ 4431 Integrated Services Router Version-
   Cisco ≫ 4451-x Integrated Services Router Version-
   Cisco ≫ 4461 Integrated Services Router Version-
   Cisco ≫ Asr 1001-hx Version-
   Cisco ≫ Asr 1001-x Version-
   Cisco ≫ Asr 1002-hx Version-
   Cisco ≫ Asr 1002-x Version-
   Cisco ≫ Asr 1004 Version-
   Cisco ≫ Asr 1006 Version-
   Cisco ≫ Asr 1006-x Version-
   Cisco ≫ Asr 1009-x Version-
   Cisco ≫ Asr 1013 Version-
   Cisco ≫ Cloud Services Router 1000v Version-
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.39% 0.571
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd@nist.gov 7.8 10 6.9
AV:N/AC:L/Au:N/C:N/I:N/A:C
psirt@cisco.com 6.1 1.6 4
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:H
CWE-20 Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

CWE-400 Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.