CVE Vulnerabilities

CVE-2018-20337

Out-of-bounds Write

Published: Dec 21, 2018 | Modified: Nov 21, 2024
CVSS 3.x
8.8
HIGH
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.x
6.8 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
3.3 MODERATE
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Ubuntu
LOW

There is a stack-based buffer overflow in the parse_makernote function of dcraw_common.cpp in LibRaw 0.19.1. Crafted input will lead to a denial of service or possibly unspecified other impact.

Weakness

The product writes data past the end, or before the beginning, of the intended buffer.

Affected Software

Name Vendor Start Version End Version
Libraw Libraw 0.19.1 (including) 0.19.1 (including)
Red Hat Enterprise Linux 8 RedHat accountsservice-0:0.6.50-8.el8 *
Red Hat Enterprise Linux 8 RedHat appstream-data-0:8-20191129.el8 *
Red Hat Enterprise Linux 8 RedHat baobab-0:3.28.0-4.el8 *
Red Hat Enterprise Linux 8 RedHat clutter-0:1.26.2-8.el8 *
Red Hat Enterprise Linux 8 RedHat evince-0:3.28.4-4.el8 *
Red Hat Enterprise Linux 8 RedHat gdm-1:3.28.3-29.el8 *
Red Hat Enterprise Linux 8 RedHat gjs-0:1.56.2-4.el8 *
Red Hat Enterprise Linux 8 RedHat gnome-boxes-0:3.28.5-8.el8 *
Red Hat Enterprise Linux 8 RedHat gnome-control-center-0:3.28.2-19.el8 *
Red Hat Enterprise Linux 8 RedHat gnome-menus-0:3.13.3-11.el8 *
Red Hat Enterprise Linux 8 RedHat gnome-online-accounts-0:3.28.2-1.el8 *
Red Hat Enterprise Linux 8 RedHat gnome-remote-desktop-0:0.1.6-8.el8 *
Red Hat Enterprise Linux 8 RedHat gnome-session-0:3.28.1-8.el8 *
Red Hat Enterprise Linux 8 RedHat gnome-settings-daemon-0:3.32.0-9.el8 *
Red Hat Enterprise Linux 8 RedHat gnome-shell-0:3.32.2-14.el8 *
Red Hat Enterprise Linux 8 RedHat gnome-software-0:3.30.6-3.el8 *
Red Hat Enterprise Linux 8 RedHat gnome-terminal-0:3.28.3-1.el8 *
Red Hat Enterprise Linux 8 RedHat gnome-tweaks-0:3.28.1-7.el8 *
Red Hat Enterprise Linux 8 RedHat gsettings-desktop-schemas-0:3.32.0-4.el8 *
Red Hat Enterprise Linux 8 RedHat gtk3-0:3.22.30-5.el8 *
Red Hat Enterprise Linux 8 RedHat gvfs-0:1.36.2-8.el8 *
Red Hat Enterprise Linux 8 RedHat LibRaw-0:0.19.5-1.el8 *
Red Hat Enterprise Linux 8 RedHat libvncserver-0:0.9.11-14.el8 *
Red Hat Enterprise Linux 8 RedHat libxslt-0:1.1.32-4.el8 *
Red Hat Enterprise Linux 8 RedHat mozjs52-0:52.9.0-2.el8 *
Red Hat Enterprise Linux 8 RedHat mozjs60-0:60.9.0-4.el8 *
Red Hat Enterprise Linux 8 RedHat mutter-0:3.32.2-34.el8 *
Red Hat Enterprise Linux 8 RedHat nautilus-0:3.28.1-12.el8 *
Red Hat Enterprise Linux 8 RedHat vala-0:0.40.19-1.el8 *
Red Hat Enterprise Linux 8 RedHat vinagre-0:3.22.0-21.el8 *
Red Hat Enterprise Linux 8 RedHat accountsservice-0:0.6.50-8.el8 *
Red Hat Enterprise Linux 8 RedHat appstream-data-0:8-20191129.el8 *
Red Hat Enterprise Linux 8 RedHat baobab-0:3.28.0-4.el8 *
Red Hat Enterprise Linux 8 RedHat clutter-0:1.26.2-8.el8 *
Red Hat Enterprise Linux 8 RedHat evince-0:3.28.4-4.el8 *
Red Hat Enterprise Linux 8 RedHat gdm-1:3.28.3-29.el8 *
Red Hat Enterprise Linux 8 RedHat gjs-0:1.56.2-4.el8 *
Red Hat Enterprise Linux 8 RedHat gnome-boxes-0:3.28.5-8.el8 *
Red Hat Enterprise Linux 8 RedHat gnome-control-center-0:3.28.2-19.el8 *
Red Hat Enterprise Linux 8 RedHat gnome-menus-0:3.13.3-11.el8 *
Red Hat Enterprise Linux 8 RedHat gnome-online-accounts-0:3.28.2-1.el8 *
Red Hat Enterprise Linux 8 RedHat gnome-remote-desktop-0:0.1.6-8.el8 *
Red Hat Enterprise Linux 8 RedHat gnome-session-0:3.28.1-8.el8 *
Red Hat Enterprise Linux 8 RedHat gnome-settings-daemon-0:3.32.0-9.el8 *
Red Hat Enterprise Linux 8 RedHat gnome-shell-0:3.32.2-14.el8 *
Red Hat Enterprise Linux 8 RedHat gnome-software-0:3.30.6-3.el8 *
Red Hat Enterprise Linux 8 RedHat gnome-terminal-0:3.28.3-1.el8 *
Red Hat Enterprise Linux 8 RedHat gnome-tweaks-0:3.28.1-7.el8 *
Red Hat Enterprise Linux 8 RedHat gsettings-desktop-schemas-0:3.32.0-4.el8 *
Red Hat Enterprise Linux 8 RedHat gtk3-0:3.22.30-5.el8 *
Red Hat Enterprise Linux 8 RedHat gvfs-0:1.36.2-8.el8 *
Red Hat Enterprise Linux 8 RedHat LibRaw-0:0.19.5-1.el8 *
Red Hat Enterprise Linux 8 RedHat libvncserver-0:0.9.11-14.el8 *
Red Hat Enterprise Linux 8 RedHat libxslt-0:1.1.32-4.el8 *
Red Hat Enterprise Linux 8 RedHat mozjs52-0:52.9.0-2.el8 *
Red Hat Enterprise Linux 8 RedHat mozjs60-0:60.9.0-4.el8 *
Red Hat Enterprise Linux 8 RedHat mutter-0:3.32.2-34.el8 *
Red Hat Enterprise Linux 8 RedHat nautilus-0:3.28.1-12.el8 *
Red Hat Enterprise Linux 8 RedHat vala-0:0.40.19-1.el8 *
Red Hat Enterprise Linux 8 RedHat vinagre-0:3.22.0-21.el8 *
Darktable Ubuntu bionic *
Darktable Ubuntu cosmic *
Darktable Ubuntu disco *
Darktable Ubuntu eoan *
Darktable Ubuntu groovy *
Darktable Ubuntu hirsute *
Darktable Ubuntu impish *
Darktable Ubuntu kinetic *
Darktable Ubuntu lunar *
Darktable Ubuntu mantic *
Darktable Ubuntu trusty *
Darktable Ubuntu xenial *
Dcraw Ubuntu bionic *
Dcraw Ubuntu cosmic *
Dcraw Ubuntu disco *
Dcraw Ubuntu eoan *
Dcraw Ubuntu groovy *
Dcraw Ubuntu hirsute *
Dcraw Ubuntu impish *
Dcraw Ubuntu kinetic *
Dcraw Ubuntu lunar *
Dcraw Ubuntu mantic *
Dcraw Ubuntu trusty *
Dcraw Ubuntu xenial *
Exactimage Ubuntu bionic *
Exactimage Ubuntu cosmic *
Exactimage Ubuntu disco *
Exactimage Ubuntu eoan *
Exactimage Ubuntu groovy *
Exactimage Ubuntu hirsute *
Exactimage Ubuntu impish *
Exactimage Ubuntu kinetic *
Exactimage Ubuntu lunar *
Exactimage Ubuntu mantic *
Exactimage Ubuntu trusty *
Exactimage Ubuntu xenial *
Kodi Ubuntu bionic *
Kodi Ubuntu cosmic *
Kodi Ubuntu disco *
Kodi Ubuntu eoan *
Kodi Ubuntu groovy *
Kodi Ubuntu hirsute *
Kodi Ubuntu impish *
Kodi Ubuntu kinetic *
Kodi Ubuntu lunar *
Kodi Ubuntu mantic *
Kodi Ubuntu xenial *
Libraw Ubuntu bionic *
Libraw Ubuntu cosmic *
Libraw Ubuntu upstream *
Rawtherapee Ubuntu bionic *
Rawtherapee Ubuntu cosmic *
Rawtherapee Ubuntu disco *
Rawtherapee Ubuntu eoan *
Rawtherapee Ubuntu groovy *
Rawtherapee Ubuntu hirsute *
Rawtherapee Ubuntu impish *
Rawtherapee Ubuntu kinetic *
Rawtherapee Ubuntu lunar *
Rawtherapee Ubuntu mantic *
Rawtherapee Ubuntu trusty *
Rawtherapee Ubuntu xenial *
Ufraw Ubuntu bionic *
Ufraw Ubuntu cosmic *
Ufraw Ubuntu disco *
Ufraw Ubuntu trusty *
Ufraw Ubuntu xenial *
Xbmc Ubuntu trusty *

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, many languages that perform their own memory management, such as Java and Perl, are not subject to buffer overflows. Other languages, such as Ada and C#, typically provide overflow protection, but the protection can be disabled by the programmer.

  • Be wary that a language’s interface to native code may still be subject to overflows, even if the language itself is theoretically safe.

  • Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.

  • Examples include the Safe C String Library (SafeStr) by Messier and Viega [REF-57], and the Strsafe.h library from Microsoft [REF-56]. These libraries provide safer versions of overflow-prone string-handling functions.

  • Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking.

  • D3-SFCV (Stack Frame Canary Validation) from D3FEND [REF-1334] discusses canary-based detection in detail.

  • Consider adhering to the following rules when allocating and managing an application’s memory:

  • Run or compile the software using features or extensions that randomly arrange the positions of a program’s executable and libraries in memory. Because this makes the addresses unpredictable, it can prevent an attacker from reliably jumping to exploitable code.

  • Examples include Address Space Layout Randomization (ASLR) [REF-58] [REF-60] and Position-Independent Executables (PIE) [REF-64]. Imported modules may be similarly realigned if their default memory addresses conflict with other modules, in a process known as “rebasing” (for Windows) and “prelinking” (for Linux) [REF-1332] using randomly generated addresses. ASLR for libraries cannot be used in conjunction with prelink since it would require relocating the libraries at run-time, defeating the whole purpose of prelinking.

  • For more information on these techniques see D3-SAOR (Segment Address Offset Randomization) from D3FEND [REF-1335].

  • Use a CPU and operating system that offers Data Execution Protection (using hardware NX or XD bits) or the equivalent techniques that simulate this feature in software, such as PaX [REF-60] [REF-61]. These techniques ensure that any instruction executed is exclusively at a memory address that is part of the code segment.

  • For more information on these techniques see D3-PSEP (Process Segment Execution Prevention) from D3FEND [REF-1336].

References