CVE-2021-20304: Integer Overflow
First published: Mon Mar 15 2021(Updated: )
A flaw was found in OpenEXR's hufDecode functionality. This flaw allows an attacker who can pass a crafted file to be processed by OpenEXR, to trigger an undefined right shift error. The highest threat from this vulnerability is to system availability.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Openexr Openexr | <=2.5.7 | |
| redhat/OpenEXR | <3.0.0 | 3.0.0 |
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Reference Links
- https://access.redhat.com/security/cve/CVE-2021-20304
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26229
- https://bugzilla.redhat.com/show_bug.cgi?id=1939157
- https://github.com/AcademySoftwareFoundation/openexr/commit/51a92d67f53c08230734e74564c807043cbfe41e
- https://github.com/AcademySoftwareFoundation/openexr/pull/849
- https://security.gentoo.org/glsa/202210-31
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1939188
Frequently Asked Questions
What is CVE-2021-20304?
CVE-2021-20304 is a vulnerability found in OpenEXR's hufDecode functionality that allows an attacker to trigger an undefined right shift error by passing a crafted file to be processed by OpenEXR.
What is the severity of CVE-2021-20304?
CVE-2021-20304 has a severity rating of 7.5 (High).
How does CVE-2021-20304 affect OpenEXR?
CVE-2021-20304 affects OpenEXR versions up to and including 2.5.7 and OpenEXR version 3.0.0 on Red Hat systems.
How can an attacker exploit CVE-2021-20304?
An attacker can exploit CVE-2021-20304 by providing a specially crafted file to be processed by OpenEXR, triggering the undefined right shift error.
What is the highest threat from CVE-2021-20304?
The highest threat from CVE-2021-20304 is to system availability.
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