Riskcovery

CVE-2023-20187

State
Published
Severity
8.6 High
Published
Sep 27, 2023
Updated
Aug 2, 2024
Reserved
Oct 27, 2022

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.18.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Hcisco

Weaknesses

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

Affected Products

ProductVersions
Cisco IOS XE SoftwareCisco
  • 3.7.1SAffected
  • 3.7.2SAffected
  • 3.7.3SAffected
  • 3.7.4SAffected
  • 3.7.5SAffected
  • 3.7.6SAffected
  • 3.7.7SAffected
  • 3.7.2tSAffected
  • 3.8.0SAffected
  • 3.8.1SAffected
  • 3.8.2SAffected
  • 3.9.1SAffected
  • 3.9.0SAffected
  • 3.9.2SAffected
  • 3.10.0SAffected
  • 3.10.1SAffected
  • 3.10.2SAffected
  • 3.10.3SAffected
  • 3.10.4SAffected
  • 3.10.5SAffected
  • 3.10.6SAffected
  • 3.10.7SAffected
  • 3.10.1xbSAffected
  • 3.10.8SAffected
  • 3.10.8aSAffected
  • and 178 more versions

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.