7.8

CVE-2021-40114

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.

Data is provided by the National Vulnerability Database (NVD)
Cisco ≫ Firepower Threat Defense Version < 6.4.0.12
Cisco ≫ Firepower Threat Defense Version >= 6.5.0 < 6.6.3
Cisco ≫ Firepower Threat Defense Version >= 6.7.0 < 6.7.0.2
Cisco ≫ Unified Threat Defense Version >= 16.12 < 16.12.6
Cisco ≫ Unified Threat Defense Version >= 17.3 < 17.3.4a
Cisco ≫ Unified Threat Defense Version >= 17.4 < 17.4.2
Snort ≫ Snort Version >= 2.0.0 < 2.9.18
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 1.36% 0.795
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd@nist.gov 7.8 10 6.9
AV:N/AC:L/Au:N/C:N/I:N/A:C
psirt@cisco.com 6.8 2.2 4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
CWE-401 Missing Release of Memory after Effective Lifetime

The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory.

CWE-770 Allocation of Resources Without Limits or Throttling

The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.