Integer overflow in OpenEXR - CVE-2020-11759

Vulnerability identifier: #VU34463

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-2020-11759

CWE-ID: CWE-190

Exploitation vector: Remote access

Exploit availability: No public exploit available

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

An issue was discovered in OpenEXR before 2.4.1. Because of integer overflows in CompositeDeepScanLine::Data::handleDeepFrameBuffer and readSampleCountForLineBlock, an attacker can write to an out-of-bounds pointer.

OpenEXR
Gentoo Linux
openEuler
Fedora
openexr (Debian package)
OpenEXR
OpenEXR-debuginfo
OpenEXR-devel
OpenEXR-libs
OpenEXR-debugsource
mingw-openexr
mingw-ilmbase

Install update from vendor's website.

OpenEXR - update to 2.4.1
openexr (Debian package) - update to 2.2.1-4.1+deb10u1
OpenEXR - update to 2.2.0-22
OpenEXR-debuginfo - update to 2.2.0-22
OpenEXR-devel - update to 2.2.0-22
OpenEXR-libs - update to 2.2.0-22
OpenEXR-debugsource - update to 2.2.0-22
mingw-openexr - update to 2.4.1-1.fc32
mingw-ilmbase - update to 2.4.1-1.fc32

• https://bugs.chromium.org/p/project-zero/issues/detail?id=1987
• https://github.com/AcademySoftwareFoundation/openexr/blob/master/CHANGES.md#version-241-february-11-2020
• https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v2.4.1
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F4KFGDQG5PVYAU7TS5MZ7XCS6EMPVII3/
• https://usn.ubuntu.com/4339-1/

• Multiple vulnerabilities in OpenEXR
• Debian update for openexr
• Gentoo update for OpenEXR
• openEuler 20.03 LTS SP1 update for OpenEXR
• Fedora 32 update for mingw-OpenEXR, mingw-ilmbase