CVEvulnerability

CVE-2023-20187

7.5 HIGH Published 2023-09-27 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2023-09-27
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.6 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-823

Description

A vulnerability in the Multicast Leaf Recycle Elimination (mLRE) feature of Cisco IOS XE Software for Cisco ASR 1000 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. This vulnerability is due to incorrect handling of certain IPv6 multicast packets when they are fanned out more than seven times on an affected device. An attacker could exploit this vulnerability by sending a specific IPv6 multicast or IPv6 multicast VPN (MVPNv6) packet through the affected device. A successful exploit could allow the attacker to cause a reload of the affected device, resulting in a DoS condition.

Affected configurations

• cisco ios xe 3.7.1s • cisco ios xe 3.7.2s • cisco ios xe 3.7.2ts • cisco ios xe 3.7.3s • cisco ios xe 3.7.4s • cisco ios xe 3.7.5s • cisco ios xe 3.7.6s • cisco ios xe 3.7.7s • cisco ios xe 3.8.0s • cisco ios xe 3.8.1s • cisco ios xe 3.8.2s • cisco ios xe 3.9.0s • cisco ios xe 3.9.1s • cisco ios xe 3.9.2s • cisco ios xe 3.10.0s • cisco ios xe 3.10.1s • cisco ios xe 3.10.1xbs • cisco ios xe 3.10.2s • cisco ios xe 3.10.3s • cisco ios xe 3.10.4s • cisco ios xe 3.10.5s • cisco ios xe 3.10.6s • cisco ios xe 3.10.7s • cisco ios xe 3.10.8as • cisco ios xe 3.10.8s • cisco ios xe 3.10.9s • cisco ios xe 3.10.10s • cisco ios xe 3.11.0s • cisco ios xe 3.11.1s • cisco ios xe 3.11.2s • cisco ios xe 3.11.3s • cisco ios xe 3.11.4s • cisco ios xe 3.12.0s • cisco ios xe 3.12.1s • cisco ios xe 3.12.2s • cisco ios xe 3.12.3s • cisco ios xe 3.12.4s • cisco ios xe 3.13.0s • cisco ios xe 3.13.1s • cisco ios xe 3.13.2as • cisco ios xe 3.13.2s • cisco ios xe 3.13.3s • cisco ios xe 3.13.4s • cisco ios xe 3.13.5as • cisco ios xe 3.13.5s • cisco ios xe 3.13.6as • cisco ios xe 3.13.6s • cisco ios xe 3.13.7s • cisco ios xe 3.13.8s • cisco ios xe 3.13.9s • cisco ios xe 3.13.10s • cisco ios xe 3.14.0s • cisco ios xe 3.14.1s • cisco ios xe 3.14.2s • cisco ios xe 3.14.3s • cisco ios xe 3.14.4s • cisco ios xe 3.15.0s • cisco ios xe 3.15.1s • cisco ios xe 3.15.2s • cisco ios xe 3.15.3s … and 141 more

Related

Weakness · CWE (1)

  • CWE-823 Use of Out-of-range Pointer Offset weakness

References