CVE-2020-3479
highPriorität · verfolgen · 30EPSS 0.011 · 65. PerzentilEURUUSEPSS · bewertet 2026-10-27
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.
Behebungen
Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.
Ein Hersteller-Fix ist verfügbar.
- Behoben12.2(6)I1cisco_csaf
Cisco has released software updates that address this vulnerability.
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Cisco has released software updates that address this vulnerability.
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https://software.cisco.com - Behoben3.10.1Ecisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben3.10.1aEcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben3.10.1sEcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben3.10.2Ecisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben3.10.3Ecisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben3.11.0Ecisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben3.11.1Ecisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben3.11.1aEcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben3.11.2Ecisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben3.9.1Ecisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben3.9.2Ecisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben3.9.2bEcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
cvss
Technischer Schweregrad, 0–10. Eine Zeile je Quelle.
Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 6.1–7.8
SSVC
Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.
schwächen
Die CWE-Schwächeklassen, zu denen dies gehört.
betroffene Produkte (239)
Betroffene Produkte und Versionsbereiche.
Advisories (1)
Hersteller- und Ökosystem-Meldungen dazu.
- cisco-sa-ios-bgp-evpn-dos-LNfYJxfFCisco IOS and IOS XE Software MP-BGP EVPN Denial of Service Vulnerability2020-09-24csaf · cisco_csafUS
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. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-bgp-evpn-dos-LNfYJxfF ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-bgp-evpn-dos-LNfYJxfF"]
auch bekannt als (4)
Weitere Namen und Kennungen dieser Entität.
quellen
Welche Quellen diesen Datensatz belegen und wann.
Referenzen (7)
Externe Belege — Patches, Meldungen, Analysen.
- http://www.nsfocus.net/vulndb/49355cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2020-3479cnnvd
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-bgp-evpn-dos-LNfYJxfFcnnvd
- https://vigilance.fr/vulnerability/Cisco-IOS-IOS-XE-multiple-vulnerabilities-33416cnnvd
- https://www.auscert.org.au/bulletins/ESB-2020.3277/cnnvd
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-bgp-evpn-dos-LNfYJxfFenisa_euvd
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-bgp-evpn-dos-LNfYJxfFVendor Advisorynvd
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