Input validation error in Cisco Systems, Inc products - CVE-2023-20187
Published: September 29, 2023
Vulnerability identifier: #VU81289
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2023-20187
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco IOS XE
ASR1000-ESP40
ASR1000-ESP100
ASR1000-ESP200
ASR1001-X
ASR1001-HX
ASR1002-X
ASR1002-HX
Cisco IOS XE
ASR1000-ESP40
ASR1000-ESP100
ASR1000-ESP200
ASR1001-X
ASR1001-HX
ASR1002-X
ASR1002-HX
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in the Multicast Leaf Recycle Elimination (mLRE) feature. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.
How to mitigate CVE-2023-20187
Install update from vendor's website.