Integer overflow in OpenEXR - CVE-2021-26260

Vulnerability identifier: #VU54402

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-26260

CWE-ID: CWE-190

Exploitation vector: Remote access

Exploit availability: No public exploit available

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

The vulnerability exists due to integer overflow in the DwaCompressor of OpenEXR. A remote attacker can pass specially crafted data to the application, trigger integer overflow and perform a denial of service attack.

OpenEXR
Debian Linux
SUSE Linux Enterprise Module for Desktop Applications
Ubuntu
openEuler
Fedora
cflinuxfs3
libopenexr22 (Ubuntu package)
openexr (Ubuntu package)
libopenexr24 (Ubuntu package)
OpenEXR
OpenEXR-devel
OpenEXR-libs
OpenEXR-debugsource
OpenEXR-debuginfo
libIlmImf-2_2-23
libIlmImf-2_2-23-debuginfo
libIlmImfUtil-2_2-23
libIlmImfUtil-2_2-23-debuginfo
openexr-debuginfo
openexr-debugsource
openexr-devel
mingw-openexr
openexr (Debian package)

Install updates from vendor's website.

OpenEXR - update to 3.0.1
cflinuxfs3 - update to 0.247.0
libopenexr22 (Ubuntu package) - addressed in versions 2.2.0-10ubuntu2.6+esm1, 2.2.0-11.1ubuntu1.7
openexr (Ubuntu package) - addressed in versions 2.2.0-10ubuntu2.6+esm1, 2.2.0-11.1ubuntu1.7, 2.3.0-6ubuntu0.5+esm1
libopenexr24 (Ubuntu package) - update to 2.3.0-6ubuntu0.5+esm1
OpenEXR - update to 2.2.0-20
OpenEXR-devel - update to 2.2.0-20
OpenEXR-libs - update to 2.2.0-20
OpenEXR-debugsource - update to 2.2.0-20
OpenEXR-debuginfo - update to 2.2.0-20
libIlmImf-2_2-23 - update to 2.2.1-3.27.1
libIlmImf-2_2-23-debuginfo - update to 2.2.1-3.27.1
libIlmImfUtil-2_2-23 - update to 2.2.1-3.27.1
libIlmImfUtil-2_2-23-debuginfo - update to 2.2.1-3.27.1
openexr-debuginfo - update to 2.2.1-3.27.1
openexr-debugsource - update to 2.2.1-3.27.1
openexr-devel - update to 2.2.1-3.27.1
mingw-openexr - update to 2.4.1-4.fc33
openexr (Debian package) - update to 2.5.4-2+deb11u1

• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BXFLD4ZAXKAIWO6ZPBCQEEDZB5IG676K/
• https://bugzilla.redhat.com/show_bug.cgi?id=1947582

• Multiple vulnerabilities in OpenEXR
• Cloud Foundry cflinuxfs3 update for OpenEXR
• SUSE update for openexr
• Ubuntu update for openexr
• Ubuntu update for openexr
• Debian update for openexr
• openEuler 20.03 LTS SP1 update for OpenEXR
• Fedora 33 update for mingw-OpenEXR
• Ubuntu update for openexr