Out-of-bounds write in OpenEXR - CVE-2018-18444
Published: August 19, 2019
Vulnerability identifier: #VU20312
CSH Severity: High
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-18444
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing untrusted input in the exrmultiview in makeMultiView.cpp. A remote attacker can create a specially crafted file, trick the victim into opening it using the affected software, trigger out-of-bounds write and execute arbitrary code on the target system.
Affected software
OpenEXR
openexr (Ubuntu package)
openexr (Alpine package)
mingw-openexr
mingw-ilmbase
Opensuse
Fedora
openexr (Ubuntu package)
openexr (Alpine package)
mingw-openexr
mingw-ilmbase
Opensuse
Fedora
How to mitigate CVE-2018-18444
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
openexr (Ubuntu package) - addressed in versions 2.2.0-10ubuntu2.1, 2.2.0-11.1ubuntu1.1, 2.2.1-4.1ubuntu0.1
openexr (Alpine package) - update to 2.2.1-r1
mingw-openexr - addressed in versions 2.2.1-5.fc30, 2.3.0-3.fc31
mingw-ilmbase - update to 2.3.0-3.fc31
openexr (Alpine package) - update to 2.2.1-r1
mingw-openexr - addressed in versions 2.2.1-5.fc30, 2.3.0-3.fc31
mingw-ilmbase - update to 2.3.0-3.fc31