Vulnerability · Published Apr 5, 2023 · Assigned by cisco
CVE-2023-20051Cisco Packet Data Network Gateway IPsec ICMP Denial of Service Vulnerability
Medium 5.8
In plain English
A medium-severity uncontrolled resource consumption in Cisco ASR 5000 Series Software from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 59% of all known vulnerabilities).
Official description
A vulnerability in the Vector Packet Processor (VPP) of Cisco Packet Data Network Gateway (PGW) could allow an unauthenticated, remote attacker to stop ICMP traffic from being processed over an IPsec connection. This vulnerability is due to the VPP improperly handling a malformed packet. An attacker could exploit this vulnerability by sending a malformed Encapsulating Security Payload (ESP) packet over an IPsec connection. A successful exploit could allow the attacker to stop ICMP traffic over an IPsec connection and cause a denial of service (DoS).
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco ASR 5000 Series Software | n/a |
Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L