8.6

CVE-2023-20083

A vulnerability in ICMPv6 inspection when configured with the Snort 2 detection engine for Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the CPU of an affected device to spike to 100 percent, which could stop all traffic processing and result in a denial of service (DoS) condition. FTD management traffic is not affected by this vulnerability. This vulnerability is due to improper error checking when parsing fields within the ICMPv6 header. An attacker could exploit this vulnerability by sending a crafted ICMPv6 packet through an affected device. A successful exploit could allow the attacker to cause the device to exhaust CPU resources and stop processing traffic, resulting in a DoS condition. Note: To recover from the DoS condition, the Snort 2 Detection Engine or the Cisco FTD device may need to be restarted.

Data is provided by the National Vulnerability Database (NVD)
Cisco ≫ Firepower Threat Defense Version >= 6.2.3 <= 6.2.3.18
Cisco ≫ Firepower Threat Defense Version >= 6.4.0 <= 6.4.0.17
Cisco ≫ Firepower Threat Defense Version >= 6.6.0 <= 6.6.7.1
Cisco ≫ Firepower Threat Defense Version >= 6.7.0 <= 6.7.0.3
Cisco ≫ Firepower Threat Defense Version >= 7.0.0 <= 7.0.5
Cisco ≫ Firepower Threat Defense Version >= 7.1.0 <= 7.1.0.3
Cisco ≫ Firepower Threat Defense Version >= 7.2.0 <= 7.2.3
Cisco ≫ Firepower Threat Defense Version >= 7.3.0 <= 7.3.1.1
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.26% 0.459
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 8.6 3.9 4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
psirt@cisco.com 8.6 3.9 4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')

The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.