CVE Vulnerabilities

CVE-2020-35534

Uncontrolled Resource Consumption

Published: Sep 01, 2022 | Modified: Nov 21, 2024
CVSS 3.x
5.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
5.5 LOW
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM

In LibRaw, there is a memory corruption vulnerability within the crxFreeSubbandData() function (librawsrcdecoderscrx.cpp) when processing cr3 files.

Weakness

The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.

Affected Software

Name Vendor Start Version End Version
Libraw Libraw 0.20.0 (including) 0.20.0 (including)
Libraw Libraw 0.20.0-rc2 (including) 0.20.0-rc2 (including)
Libraw Libraw 0.20.1 (including) 0.20.1 (including)
Libraw Libraw 0.20.2 (including) 0.20.2 (including)
Libraw Libraw 0.21.0-beta1 (including) 0.21.0-beta1 (including)
Darktable Ubuntu bionic *
Darktable Ubuntu kinetic *
Darktable Ubuntu lunar *
Darktable Ubuntu mantic *
Darktable Ubuntu trusty *
Darktable Ubuntu xenial *
Dcraw Ubuntu bionic *
Dcraw Ubuntu kinetic *
Dcraw Ubuntu lunar *
Dcraw Ubuntu mantic *
Dcraw Ubuntu trusty *
Dcraw Ubuntu xenial *
Digikam Ubuntu bionic *
Digikam Ubuntu kinetic *
Digikam Ubuntu lunar *
Digikam Ubuntu mantic *
Digikam Ubuntu trusty *
Digikam Ubuntu upstream *
Digikam Ubuntu xenial *
Exactimage Ubuntu bionic *
Exactimage Ubuntu kinetic *
Exactimage Ubuntu lunar *
Exactimage Ubuntu mantic *
Exactimage Ubuntu trusty *
Exactimage Ubuntu xenial *
Kodi Ubuntu bionic *
Kodi Ubuntu kinetic *
Kodi Ubuntu lunar *
Kodi Ubuntu mantic *
Kodi Ubuntu xenial *
Libraw Ubuntu trusty *
Libraw Ubuntu upstream *
Libraw Ubuntu xenial *
Rawtherapee Ubuntu bionic *
Rawtherapee Ubuntu kinetic *
Rawtherapee Ubuntu lunar *
Rawtherapee Ubuntu mantic *
Rawtherapee Ubuntu trusty *
Rawtherapee Ubuntu xenial *
Ufraw Ubuntu bionic *
Ufraw Ubuntu trusty *
Ufraw Ubuntu xenial *
Xbmc Ubuntu trusty *

Extended Description

Limited resources include memory, file system storage, database connection pool entries, and CPU. If an attacker can trigger the allocation of these limited resources, but the number or size of the resources is not controlled, then the attacker could cause a denial of service that consumes all available resources. This would prevent valid users from accessing the product, and it could potentially have an impact on the surrounding environment. For example, a memory exhaustion attack against an application could slow down the application as well as its host operating system. There are at least three distinct scenarios which can commonly lead to resource exhaustion:

Resource exhaustion problems are often result due to an incorrect implementation of the following situations:

Potential Mitigations

  • Mitigation of resource exhaustion attacks requires that the target system either:

  • The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.

  • The second solution is simply difficult to effectively institute – and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.

References