CVE-2024-20384
MediumCVSS 5.8Exploitation Probability (EPSS)
Low risk37th percentile - higher than 37% of all known CVEs
Summary
A vulnerability in the Network Service Group (NSG) feature of Cisco ASA and FTD could allow an unauthenticated, remote attacker to bypass a configured ACL and allow traffic that should be denied. This is due to a logic error when NSG ACLs are populated.
Risk Assessment
An attacker could bypass ACL rules, potentially enabling unauthorized access to protected resources.
Recommendation
Apply Cisco updates for ASA and FTD and review NSG configuration for anomalies.
Other vulnerabilities in Cisco ASA
See all- CVE-2024-20341Medium
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A vulnerability in the AnyConnect firewall for Cisco ASA and FTD could allow an unauthenticated, remote attacker to bypass a configured ACL and allow traffic that should have been denied. This is due to a logic error in populating group ACLs when an AnyConnect client establishes a new session.
- CVE-2023-20275Medium
A vulnerability in the AnyConnect SSL VPN feature of Cisco ASA and FTD could allow an authenticated, remote attacker to send packets with another VPN user's source IP address. This is due to improper validation of the packet's inner source IP after decryption.
- CVE-2021-1476Medium
A vulnerability in the CLI of Cisco ASA and FTD could allow an authenticated, local attacker to execute arbitrary commands on the underlying OS with root privileges. This is due to insufficient input validation of user-supplied commands.
Original NVD description (English source)
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.