CVE Vulnerabilities

CVE-2019-14559

Missing Release of Memory after Effective Lifetime

Published: Nov 23, 2020 | Modified: Jan 01, 2022
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
5.3 MODERATE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Ubuntu
LOW

Uncontrolled resource consumption in EDK II may allow an unauthenticated user to potentially enable denial of service via network access.

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
Edk2 Tianocore - (including) - (including)
Red Hat Enterprise Linux 8 RedHat edk2-0:20200602gitca407c7246bf-3.el8 *
Edk2 Ubuntu bionic *
Edk2 Ubuntu eoan *
Edk2 Ubuntu esm-apps/bionic *
Edk2 Ubuntu esm-apps/xenial *
Edk2 Ubuntu trusty *
Edk2 Ubuntu xenial *

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