Vulnerabilities
Misconfiguration
Runtime Security
Compliance
CVE Vulnerabilities

CVE-2024-20481

Missing Release of Resource after Effective Lifetime

Published: Oct 23, 2024 | Modified: Oct 29, 2024
CVSS 3.x
5.8
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2024-20481
CWEhttps://cwe.mitre.org/data/definitions/772.html

A vulnerability in the Remote Access VPN (RAVPN) service of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) of the RAVPN service. This vulnerability is due to resource exhaustion. An attacker could exploit this vulnerability by sending a large number of VPN authentication requests to an affected device. A successful exploit could allow the attacker to exhaust resources, resulting in a DoS of the RAVPN service on the affected device. Depending on the impact of the attack, a reload of the device may be required to restore the RAVPN service. Services that are not related to VPN are not affected. Cisco Talos discussed these attacks in the blog post Large-scale brute-force activity targeting VPNs, SSH services with commonly used login credentials.

Weakness

The product does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed.

Affected Software

Name Vendor Start Version End Version
Firepower_threat_defense_software Cisco 6.2.3 (including) 6.2.3 (including)
Firepower_threat_defense_software Cisco 6.2.3.1 (including) 6.2.3.1 (including)
Firepower_threat_defense_software Cisco 6.2.3.2 (including) 6.2.3.2 (including)
Firepower_threat_defense_software Cisco 6.2.3.3 (including) 6.2.3.3 (including)
Firepower_threat_defense_software Cisco 6.2.3.4 (including) 6.2.3.4 (including)
Firepower_threat_defense_software Cisco 6.2.3.5 (including) 6.2.3.5 (including)
Firepower_threat_defense_software Cisco 6.2.3.6 (including) 6.2.3.6 (including)
Firepower_threat_defense_software Cisco 6.2.3.7 (including) 6.2.3.7 (including)
Firepower_threat_defense_software Cisco 6.2.3.8 (including) 6.2.3.8 (including)
Firepower_threat_defense_software Cisco 6.2.3.9 (including) 6.2.3.9 (including)
Firepower_threat_defense_software Cisco 6.2.3.10 (including) 6.2.3.10 (including)
Firepower_threat_defense_software Cisco 6.2.3.11 (including) 6.2.3.11 (including)
Firepower_threat_defense_software Cisco 6.2.3.12 (including) 6.2.3.12 (including)
Firepower_threat_defense_software Cisco 6.2.3.13 (including) 6.2.3.13 (including)
Firepower_threat_defense_software Cisco 6.2.3.14 (including) 6.2.3.14 (including)
Firepower_threat_defense_software Cisco 6.2.3.15 (including) 6.2.3.15 (including)
Firepower_threat_defense_software Cisco 6.2.3.16 (including) 6.2.3.16 (including)
Firepower_threat_defense_software Cisco 6.2.3.17 (including) 6.2.3.17 (including)
Firepower_threat_defense_software Cisco 6.2.3.18 (including) 6.2.3.18 (including)
Firepower_threat_defense_software Cisco 6.4.0 (including) 6.4.0 (including)
Firepower_threat_defense_software Cisco 6.4.0.1 (including) 6.4.0.1 (including)
Firepower_threat_defense_software Cisco 6.4.0.2 (including) 6.4.0.2 (including)
Firepower_threat_defense_software Cisco 6.4.0.3 (including) 6.4.0.3 (including)
Firepower_threat_defense_software Cisco 6.4.0.4 (including) 6.4.0.4 (including)
Firepower_threat_defense_software Cisco 6.4.0.5 (including) 6.4.0.5 (including)
Firepower_threat_defense_software Cisco 6.4.0.6 (including) 6.4.0.6 (including)
Firepower_threat_defense_software Cisco 6.4.0.7 (including) 6.4.0.7 (including)
Firepower_threat_defense_software Cisco 6.4.0.8 (including) 6.4.0.8 (including)
Firepower_threat_defense_software Cisco 6.4.0.9 (including) 6.4.0.9 (including)
Firepower_threat_defense_software Cisco 6.4.0.10 (including) 6.4.0.10 (including)
Firepower_threat_defense_software Cisco 6.4.0.11 (including) 6.4.0.11 (including)
Firepower_threat_defense_software Cisco 6.4.0.12 (including) 6.4.0.12 (including)
Firepower_threat_defense_software Cisco 6.4.0.13 (including) 6.4.0.13 (including)
Firepower_threat_defense_software Cisco 6.4.0.14 (including) 6.4.0.14 (including)
Firepower_threat_defense_software Cisco 6.4.0.15 (including) 6.4.0.15 (including)
Firepower_threat_defense_software Cisco 6.4.0.16 (including) 6.4.0.16 (including)
Firepower_threat_defense_software Cisco 6.4.0.17 (including) 6.4.0.17 (including)
Firepower_threat_defense_software Cisco 6.4.0.18 (including) 6.4.0.18 (including)
Firepower_threat_defense_software Cisco 6.6.0 (including) 6.6.0 (including)
Firepower_threat_defense_software Cisco 6.6.0.1 (including) 6.6.0.1 (including)
Firepower_threat_defense_software Cisco 6.6.1 (including) 6.6.1 (including)
Firepower_threat_defense_software Cisco 6.6.3 (including) 6.6.3 (including)
Firepower_threat_defense_software Cisco 6.6.4 (including) 6.6.4 (including)
Firepower_threat_defense_software Cisco 6.6.5 (including) 6.6.5 (including)
Firepower_threat_defense_software Cisco 6.6.5.1 (including) 6.6.5.1 (including)
Firepower_threat_defense_software Cisco 6.6.5.2 (including) 6.6.5.2 (including)
Firepower_threat_defense_software Cisco 6.6.7 (including) 6.6.7 (including)
Firepower_threat_defense_software Cisco 6.6.7.1 (including) 6.6.7.1 (including)
Firepower_threat_defense_software Cisco 6.6.7.2 (including) 6.6.7.2 (including)
Firepower_threat_defense_software Cisco 6.7.0 (including) 6.7.0 (including)
Firepower_threat_defense_software Cisco 6.7.0.1 (including) 6.7.0.1 (including)
Firepower_threat_defense_software Cisco 6.7.0.2 (including) 6.7.0.2 (including)
Firepower_threat_defense_software Cisco 6.7.0.3 (including) 6.7.0.3 (including)
Firepower_threat_defense_software Cisco 7.0.0 (including) 7.0.0 (including)
Firepower_threat_defense_software Cisco 7.0.0.1 (including) 7.0.0.1 (including)
Firepower_threat_defense_software Cisco 7.0.1 (including) 7.0.1 (including)
Firepower_threat_defense_software Cisco 7.0.1.1 (including) 7.0.1.1 (including)
Firepower_threat_defense_software Cisco 7.0.2 (including) 7.0.2 (including)
Firepower_threat_defense_software Cisco 7.0.2.1 (including) 7.0.2.1 (including)
Firepower_threat_defense_software Cisco 7.0.3 (including) 7.0.3 (including)
Firepower_threat_defense_software Cisco 7.0.4 (including) 7.0.4 (including)
Firepower_threat_defense_software Cisco 7.0.5 (including) 7.0.5 (including)
Firepower_threat_defense_software Cisco 7.0.6 (including) 7.0.6 (including)
Firepower_threat_defense_software Cisco 7.0.6.1 (including) 7.0.6.1 (including)
Firepower_threat_defense_software Cisco 7.0.6.2 (including) 7.0.6.2 (including)
Firepower_threat_defense_software Cisco 7.1.0 (including) 7.1.0 (including)
Firepower_threat_defense_software Cisco 7.1.0.1 (including) 7.1.0.1 (including)
Firepower_threat_defense_software Cisco 7.1.0.2 (including) 7.1.0.2 (including)
Firepower_threat_defense_software Cisco 7.1.0.3 (including) 7.1.0.3 (including)
Firepower_threat_defense_software Cisco 7.2.0 (including) 7.2.0 (including)
Firepower_threat_defense_software Cisco 7.2.0.1 (including) 7.2.0.1 (including)
Firepower_threat_defense_software Cisco 7.2.1 (including) 7.2.1 (including)
Firepower_threat_defense_software Cisco 7.2.2 (including) 7.2.2 (including)
Firepower_threat_defense_software Cisco 7.2.3 (including) 7.2.3 (including)
Firepower_threat_defense_software Cisco 7.2.4 (including) 7.2.4 (including)
Firepower_threat_defense_software Cisco 7.2.4.1 (including) 7.2.4.1 (including)
Firepower_threat_defense_software Cisco 7.2.5 (including) 7.2.5 (including)
Firepower_threat_defense_software Cisco 7.2.5.1 (including) 7.2.5.1 (including)
Firepower_threat_defense_software Cisco 7.2.5.2 (including) 7.2.5.2 (including)
Firepower_threat_defense_software Cisco 7.2.6 (including) 7.2.6 (including)
Firepower_threat_defense_software Cisco 7.2.7 (including) 7.2.7 (including)
Firepower_threat_defense_software Cisco 7.2.8 (including) 7.2.8 (including)
Firepower_threat_defense_software Cisco 7.2.8.1 (including) 7.2.8.1 (including)
Firepower_threat_defense_software Cisco 7.3.0 (including) 7.3.0 (including)
Firepower_threat_defense_software Cisco 7.3.1 (including) 7.3.1 (including)
Firepower_threat_defense_software Cisco 7.3.1.1 (including) 7.3.1.1 (including)
Firepower_threat_defense_software Cisco 7.3.1.2 (including) 7.3.1.2 (including)
Firepower_threat_defense_software Cisco 7.4.0 (including) 7.4.0 (including)
Firepower_threat_defense_software Cisco 7.4.1 (including) 7.4.1 (including)
Firepower_threat_defense_software Cisco 7.4.1.1 (including) 7.4.1.1 (including)

Potential Mitigations

  • Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
  • For example, languages such as Java, Ruby, and Lisp perform automatic garbage collection that releases memory for objects that have been deallocated.
  • Use resource-limiting settings provided by the operating system or environment. For example, when managing system resources in POSIX, setrlimit() can be used to set limits for certain types of resources, and getrlimit() can determine how many resources are available. However, these functions are not available on all operating systems.
  • When the current levels get close to the maximum that is defined for the application (see CWE-770), then limit the allocation of further resources to privileged users; alternately, begin releasing resources for less-privileged users. While this mitigation may protect the system from attack, it will not necessarily stop attackers from adversely impacting other users.
  • Ensure that the application performs the appropriate error checks and error handling in case resources become unavailable (CWE-703).

References

Aqua Security is the largest pure-play cloud native security company, providing customers the freedom to innovate and run their businesses with minimal friction. The Aqua Cloud Native Security Platform provides prevention, detection, and response automation across the entire application lifecycle to secure the build, secure cloud infrastructure and secure running workloads wherever they are deployed.
Copyright © 2024 Aqua Security Software Ltd.   Privacy Policy | Terms of Use