CVE-2021-20300

low-risk
Published 2022-03-04

A flaw was found in OpenEXR's hufUncompress functionality in OpenEXR/IlmImf/ImfHuf.cpp. This flaw allows an attacker who can submit a crafted file that is processed by OpenEXR, to trigger an integer overflow. The highest threat from this vulnerability is to system availability.

Do I need to act?

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0.40% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (2)

Affected Vendors

Debian Openexr

References (8)

Third Party Advisory https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25562
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1939153
Patch https://github.com/AcademySoftwareFoundation/openexr/pull/836
Mailing List https://lists.debian.org/debian-lts-announce/2022/12/msg00022.html
Third Party Advisory https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25562
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1939153
Patch https://github.com/AcademySoftwareFoundation/openexr/pull/836
Mailing List https://lists.debian.org/debian-lts-announce/2022/12/msg00022.html
26
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 1/34 · Minimal
Exposure 7/34 · Low