Out-of-bounds read in OpenEXR - CVE-2021-3477

Vulnerability identifier: #VU51932

CSH Severity: Medium

CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-3477

CWE-ID: CWE-125

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition within the deep tile sample size calculations. A remote attacker can create a specially crafted file, trigger out-of-bounds read error and read contents of memory on the system.

OpenEXR
Gentoo Linux
SUSE Linux Enterprise Workstation Extension
SUSE Linux Enterprise Software Development Kit
SUSE Linux Enterprise Server
SUSE Linux Enterprise Module for Desktop Applications
Ubuntu
openEuler
cflinuxfs3
libIlmImf-Imf_2_1-21-debuginfo-32bit
libIlmImf-Imf_2_1-21-32bit
openexr-debugsource
openexr-debuginfo
openexr-devel
libIlmImf-Imf_2_1-21
libIlmImf-Imf_2_1-21-debuginfo
OpenEXR
openexr (Ubuntu package)
libopenexr22 (Ubuntu package)
OpenEXR-libs
OpenEXR-debuginfo
OpenEXR-devel
OpenEXR-debugsource
libIlmImfUtil-2_2-23-debuginfo
libIlmImfUtil-2_2-23
libIlmImf-2_2-23-debuginfo
libIlmImf-2_2-23
libopenexr24 (Ubuntu package)
libopenexr25 (Ubuntu package)

Install updates from vendor's website.

OpenEXR - addressed in versions 2.4.3, 3.0.0 beta
cflinuxfs3 - update to 0.234.0
libIlmImf-Imf_2_1-21-debuginfo-32bit - update to 2.1.0-6.42.1
libIlmImf-Imf_2_1-21-32bit - update to 2.1.0-6.42.1
openexr-debugsource - addressed in versions 2.1.0-6.42.1, 2.2.1-3.27.1
openexr-debuginfo - addressed in versions 2.1.0-6.42.1, 2.2.1-3.27.1
openexr-devel - addressed in versions 2.1.0-6.42.1, 2.2.1-3.27.1
libIlmImf-Imf_2_1-21 - update to 2.1.0-6.42.1
libIlmImf-Imf_2_1-21-debuginfo - update to 2.1.0-6.42.1
OpenEXR - update to 2.1.0-6.42.1
openexr (Ubuntu package) - addressed in versions 2.2.0-10ubuntu2.6, 2.2.0-11.1ubuntu1.6, 2.3.0-6ubuntu0.5, 2.5.3-2ubuntu0.2
libopenexr22 (Ubuntu package) - addressed in versions 2.2.0-10ubuntu2.6, 2.2.0-11.1ubuntu1.6
OpenEXR - update to 2.2.0-19
OpenEXR-libs - update to 2.2.0-19
OpenEXR-debuginfo - update to 2.2.0-19
OpenEXR-devel - update to 2.2.0-19
OpenEXR-debugsource - update to 2.2.0-19
libIlmImfUtil-2_2-23-debuginfo - update to 2.2.1-3.27.1
libIlmImfUtil-2_2-23 - update to 2.2.1-3.27.1
libIlmImf-2_2-23-debuginfo - update to 2.2.1-3.27.1
libIlmImf-2_2-23 - update to 2.2.1-3.27.1
libopenexr24 (Ubuntu package) - update to 2.3.0-6ubuntu0.5
libopenexr25 (Ubuntu package) - update to 2.5.3-2ubuntu0.2

• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26956
• https://bugzilla.redhat.com/show_bug.cgi?id=1939159
• https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v2.4.3

• Multiple vulnerabilities in OpenEXR
• Multiple vulnerabilities in Cloud Foundry cflinuxfs3
• Gentoo update for OpenEXR
• SUSE update for openexr
• Ubuntu update for openexr
• SUSE update for openexr
• openEuler 20.03 LTS SP1 update for OpenEXR