Vulnerabilities
Misconfiguration
Runtime Security
Compliance
CVE Vulnerabilities

CVE-2019-6671

Missing Release of Memory after Effective Lifetime

Published: Nov 27, 2019 | Modified: Jul 21, 2021
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
Ubuntu
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2019-6671
CWEhttps://cwe.mitre.org/data/definitions/401.html

On BIG-IP 15.0.0-15.0.1, 14.1.0-14.1.2, 14.0.0-14.0.1, and 13.1.0-13.1.3.1, under certain conditions tmm may leak memory when processing packet fragments, leading to resource starvation.

Weakness

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

Affected Software

Name Vendor Start Version End Version
Big-ip_access_policy_manager F5 13.1.0 (including) 13.1.3.1 (including)
Big-ip_access_policy_manager F5 14.0.0 (including) 14.0.1 (including)
Big-ip_access_policy_manager F5 14.1.0 (including) 14.1.2 (including)
Big-ip_access_policy_manager F5 15.0.0 (including) 15.0.1 (including)
Big-ip_advanced_firewall_manager F5 13.1.0 (including) 13.1.3.1 (including)
Big-ip_advanced_firewall_manager F5 14.0.0 (including) 14.0.1 (including)
Big-ip_advanced_firewall_manager F5 14.1.0 (including) 14.1.2 (including)
Big-ip_advanced_firewall_manager F5 15.0.0 (including) 15.0.1 (including)
Big-ip_analytics F5 13.1.0 (including) 13.1.3.1 (including)
Big-ip_analytics F5 14.0.0 (including) 14.0.1 (including)
Big-ip_analytics F5 14.1.0 (including) 14.1.2 (including)
Big-ip_analytics F5 15.0.0 (including) 15.0.1 (including)
Big-ip_application_acceleration_manager F5 13.1.0 (including) 13.1.3.1 (including)
Big-ip_application_acceleration_manager F5 14.0.0 (including) 14.0.1 (including)
Big-ip_application_acceleration_manager F5 14.1.0 (including) 14.1.2 (including)
Big-ip_application_acceleration_manager F5 15.0.0 (including) 15.0.1 (including)
Big-ip_application_security_manager F5 13.1.0 (including) 13.1.3.1 (including)
Big-ip_application_security_manager F5 14.0.0 (including) 14.0.1 (including)
Big-ip_application_security_manager F5 14.1.0 (including) 14.1.2 (including)
Big-ip_application_security_manager F5 15.0.0 (including) 15.0.1 (including)
Big-ip_domain_name_system F5 13.1.0 (including) 13.1.3.1 (including)
Big-ip_domain_name_system F5 14.0.0 (including) 14.0.1 (including)
Big-ip_domain_name_system F5 14.1.0 (including) 14.1.2 (including)
Big-ip_domain_name_system F5 15.0.0 (including) 15.0.1 (including)
Big-ip_edge_gateway F5 13.1.0 (including) 13.1.3.1 (including)
Big-ip_edge_gateway F5 14.0.0 (including) 14.0.1 (including)
Big-ip_edge_gateway F5 14.1.0 (including) 14.1.2 (including)
Big-ip_edge_gateway F5 15.0.0 (including) 15.0.1 (including)
Big-ip_fraud_protection_service F5 13.1.0 (including) 13.1.3.1 (including)
Big-ip_fraud_protection_service F5 14.0.0 (including) 14.0.1 (including)
Big-ip_fraud_protection_service F5 14.1.0 (including) 14.1.2 (including)
Big-ip_fraud_protection_service F5 15.0.0 (including) 15.0.1 (including)
Big-ip_global_traffic_manager F5 13.0.0 (including) 13.1.3.1 (including)
Big-ip_global_traffic_manager F5 14.0.0 (including) 14.0.1 (including)
Big-ip_global_traffic_manager F5 14.1.0 (including) 14.1.2 (including)
Big-ip_global_traffic_manager F5 15.0.0 (including) 15.0.1 (including)
Big-ip_link_controller F5 13.1.0 (including) 13.1.3.1 (including)
Big-ip_link_controller F5 14.0.0 (including) 14.0.1 (including)
Big-ip_link_controller F5 14.1.0 (including) 14.1.2 (including)
Big-ip_link_controller F5 15.0.0 (including) 15.0.1 (including)
Big-ip_local_traffic_manager F5 13.1.0 (including) 13.1.3.1 (including)
Big-ip_local_traffic_manager F5 14.0.0 (including) 14.0.1 (including)
Big-ip_local_traffic_manager F5 14.1.0 (including) 14.1.2 (including)
Big-ip_local_traffic_manager F5 15.0.0 (including) 15.0.1 (including)
Big-ip_policy_enforcement_manager F5 13.1.0 (including) 13.1.3.1 (including)
Big-ip_policy_enforcement_manager F5 14.0.0 (including) 14.0.1 (including)
Big-ip_policy_enforcement_manager F5 14.1.0 (including) 14.1.2 (including)
Big-ip_policy_enforcement_manager F5 15.0.0 (including) 15.0.1 (including)
Big-ip_webaccelerator F5 13.1.0 (including) 13.1.3.1 (including)
Big-ip_webaccelerator F5 14.0.0 (including) 14.0.1 (including)
Big-ip_webaccelerator F5 14.1.0 (including) 14.1.2 (including)
Big-ip_webaccelerator F5 15.0.0 (including) 15.0.1 (including)

Potential Mitigations

  • Choose a language or tool that provides automatic memory management, or makes manual memory management less error-prone.
  • For example, glibc in Linux provides protection against free of invalid pointers.
  • When using Xcode to target OS X or iOS, enable automatic reference counting (ARC) [REF-391].
  • To help correctly and consistently manage memory when programming in C++, consider using a smart pointer class such as std::auto_ptr (defined by ISO/IEC ISO/IEC 14882:2003), std::shared_ptr and std::unique_ptr (specified by an upcoming revision of the C++ standard, informally referred to as C++ 1x), or equivalent solutions such as Boost.

References

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