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CVE-2024-20384

MEDIUMCVSS 5.8/10EPSS 0.45%

Last modified

CVE-2024-20384 is a medium-severity vulnerability rated 5.8/10 on the CVSS scale. A vulnerability in the Network Service Group (NSG) feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass a configured access control list (ACL) and allow traffic that should be denied to flow through an affected device. This vulnerability is due to a logic error that occurs when NSG ACLs are populated on an affected device. An attacker could exploit this vulnerability by establishing a connection to the affected device. EPSS estimates a 0.45% chance of exploitation in the next 30 days.

Description

A vulnerability in the Network Service Group (NSG) feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass a configured access control list (ACL) and allow traffic that should be denied to flow through an affected device. This vulnerability is due to a logic error that occurs when NSG ACLs are populated on an affected device. An attacker could exploit this vulnerability by establishing a connection to the affected device. A successful exploit could allow the attacker to bypass configured ACL rules.

Metrics

CVSS 3.1
5.8/10

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

EPSS Probability
0.45%

37.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoAdaptive Security Appliance Software9.16.1
CiscoAdaptive Security Appliance Software9.16.1.28
CiscoAdaptive Security Appliance Software9.16.2
CiscoAdaptive Security Appliance Software9.16.2.3
CiscoAdaptive Security Appliance Software9.16.2.7
CiscoAdaptive Security Appliance Software9.16.2.11
CiscoAdaptive Security Appliance Software9.16.2.13
CiscoAdaptive Security Appliance Software9.16.2.14
CiscoAdaptive Security Appliance Software9.16.3
CiscoAdaptive Security Appliance Software9.16.3.3
CiscoAdaptive Security Appliance Software9.16.3.14
CiscoAdaptive Security Appliance Software9.16.3.15
CiscoAdaptive Security Appliance Software9.16.3.19
CiscoAdaptive Security Appliance Software9.16.3.23
CiscoAdaptive Security Appliance Software9.16.4
CiscoAdaptive Security Appliance Software9.16.4.9
CiscoAdaptive Security Appliance Software9.16.4.14
CiscoAdaptive Security Appliance Software9.16.4.18
CiscoAdaptive Security Appliance Software9.16.4.19
CiscoAdaptive Security Appliance Software9.16.4.27
CiscoAdaptive Security Appliance Software9.16.4.38
CiscoAdaptive Security Appliance Software9.16.4.39
CiscoAdaptive Security Appliance Software9.16.4.42
CiscoAdaptive Security Appliance Software9.16.4.48
CiscoAdaptive Security Appliance Software9.16.4.55
CiscoAdaptive Security Appliance Software9.16.4.57
CiscoAdaptive Security Appliance Software9.16.4.61
CiscoAdaptive Security Appliance Software9.17.1
CiscoAdaptive Security Appliance Software9.17.1.7
CiscoAdaptive Security Appliance Software9.17.1.9
CiscoAdaptive Security Appliance Software9.17.1.10
CiscoAdaptive Security Appliance Software9.17.1.11
CiscoAdaptive Security Appliance Software9.17.1.13
CiscoAdaptive Security Appliance Software9.17.1.15
CiscoAdaptive Security Appliance Software9.17.1.20
CiscoAdaptive Security Appliance Software9.17.1.30
CiscoAdaptive Security Appliance Software9.17.1.33
CiscoAdaptive Security Appliance Software9.17.1.39
CiscoAdaptive Security Appliance Software9.18.1
CiscoAdaptive Security Appliance Software9.18.1.3
CiscoAdaptive Security Appliance Software9.18.2
CiscoAdaptive Security Appliance Software9.18.2.5
CiscoAdaptive Security Appliance Software9.18.2.7
CiscoAdaptive Security Appliance Software9.18.2.8
CiscoAdaptive Security Appliance Software9.18.3
CiscoAdaptive Security Appliance Software9.18.3.39
CiscoAdaptive Security Appliance Software9.18.3.46
CiscoAdaptive Security Appliance Software9.18.3.53
CiscoAdaptive Security Appliance Software9.18.3.55
CiscoAdaptive Security Appliance Software9.18.3.56

Showing 50 of 110 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2024-20384?
A vulnerability in the Network Service Group (NSG) feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass a configured access control list (ACL) and allow traffic that should be denied to flow through an affected device. This vulnerability is due to a logic error that occurs when NSG ACLs are populated on an affected device. An attacker could exploit this vulnerability by establishing a connection to the affected device. A successful exploit could allow the attacker to bypass configured ACL rules.
How severe is CVE-2024-20384?
CVE-2024-20384 has a CVSS score of 5.8/10 (MEDIUM severity). The EPSS model estimates a 0.45% probability of exploitation in the next 30 days.
How do I fix CVE-2024-20384?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST