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8.6Hoch KEV

CVE-2020-3566Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerability

Cisco Cisco IOS XR Software Veröffentlicht: (vor 6 Jahren)

Bekannt ausgenutzt — Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerability

CISA hat am 03.11.2021 bestätigt, dass diese Schwachstelle in echten Angriffen genutzt wird. Frist für US-Bundesbehörden: 03.05.2022.

Erforderliche Maßnahme: Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2020-3566

Beschreibung

A vulnerability in the Distance Vector Multicast Routing Protocol (DVMRP) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to exhaust process memory of an affected device. The vulnerability is due to insufficient queue management for Internet Group Management Protocol (IGMP) packets. An attacker could exploit this vulnerability by sending crafted IGMP traffic to an affected device. A successful exploit could allow the attacker to cause memory exhaustion, resulting in instability of other processes. These processes may include, but are not limited to, interior and exterior routing protocols. Cisco will release software updates that address this vulnerability.

Schwachstellentyp (CWE): CWE-400CWE-770

Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.

Betroffene Produkte und Versionen

HerstellerProduktVersionen
Cisco Cisco IOS XR Software —
cisco ios xr 6.4.2

Referenzen und Patches

CPE-Treffer (NVD) (1)
  • cpe:2.3:o:cisco:ios_xr:6.4.2:*:*:*:*:*:*:*

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