CVE-2021-40114 Multiple Cisco Products Snort Memory Leak Denial of Service Vulnerability

2021-10-2700:00:00

CWE-770

cisco

www.cve.org

6.8 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H

8 High

AI Score

Confidence

High

0.004 Low

EPSS

Percentile

72.4%

JSON

Multiple Cisco products are affected by a vulnerability in the way the Snort detection engine processes ICMP traffic that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper memory resource management while the Snort detection engine is processing ICMP packets. An attacker could exploit this vulnerability by sending a series of ICMP packets through an affected device. A successful exploit could allow the attacker to exhaust resources on the affected device, causing the device to reload.

CNA Affected

[
  {
    "vendor": "Cisco",
    "product": "Cisco Firepower Threat Defense Software ",
    "versions": [
      {
        "version": "n/a",
        "status": "affected"
      }
    ]
  }
]