CVE-2022-20751: cisco cisco firepower threat defense software

Vulnerability summary

CVE-2022-20751 is a high (CVSS 8.6) vulnerability in cisco cisco firepower threat defense software. EPSS estimates a 1.36% chance of exploitation in the next 30 days, higher than 71.2% of scored vulnerabilities.

Timeline

1. 03-05-2022
   PublishedVulnerability first disclosed.
2. 06-11-2024
   Last modifiedVulnerability information updated.

Description

A vulnerability in the Snort detection engine integration for Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause unlimited memory consumption, which could lead to a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient memory management for certain Snort events. An attacker could exploit this vulnerability by sending a series of crafted IP packets that would generate specific Snort events on an affected device. A sustained attack could cause an out of memory condition on the affected device. A successful exploit could allow the attacker to interrupt all traffic flowing through the affected device. In some circumstances, the attacker may be able to cause the device to reload, resulting in a DoS condition.

• CWE-770Allocation of Resources Without Limits or ThrottlingThe product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.