CVE-2021-20303: Integer Overflow
A flaw found in function dataWindowForTile() of IlmImf/ImfTiledMisc.cpp. An attacker who is able to submit a crafted file to be processed by OpenEXR could trigger an integer overflow, leading to an out-of-bounds write on the heap. The greatest impact of this flaw is to application availability, with some potential impact to data integrity as well.
Other sources
Heap-buffer-overflow in Imf25::copyIntoFrameBuffer
— Red Hat
Affected Software
Remediation
Event History
Frequently Asked Questions
What is CVE-2021-20303?
CVE-2021-20303 is a vulnerability found in the function dataWindowForTile() of IlmImf/ImfTiledMisc.cpp in OpenEXR, which could be exploited by an attacker to trigger an integer overflow and perform an out-of-bounds write on the heap.
How does CVE-2021-20303 impact application availability?
The greatest impact of CVE-2021-20303 is to application availability.
What is the severity of CVE-2021-20303?
CVE-2021-20303 has a severity rating of 6.1 (medium).
Which software versions are affected by CVE-2021-20303?
CVE-2021-20303 affects OpenEXR versions up to and excluding 2.5.4, Debian Linux version 10.0, and Red Hat OpenEXR version up to and excluding 2.5.4.
How can I fix the CVE-2021-20303 vulnerability?
To fix the CVE-2021-20303 vulnerability, update OpenEXR to version 2.5.4 or higher.