CVE-2021-3476

moderate-risk
Published 2021-03-30

A flaw was found in OpenEXR's B44 uncompression functionality in versions before 3.0.0-beta. An attacker who is able to submit a crafted file to OpenEXR could trigger shift overflows, potentially affecting application availability.

Do I need to act?

~
1.0% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
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 5.3/10 Medium
NETWORK / LOW complexity

Affected Products (3)

Affected Vendors

Debian Openexr

References (10)

Issue Tracking https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=24787
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1939145
Third Party Advisory https://lists.debian.org/debian-lts-announce/2021/07/msg00001.html
Mailing List https://lists.debian.org/debian-lts-announce/2022/12/msg00022.html
Third Party Advisory https://security.gentoo.org/glsa/202107-27
Issue Tracking https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=24787
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1939145
Third Party Advisory https://lists.debian.org/debian-lts-announce/2021/07/msg00001.html
Mailing List https://lists.debian.org/debian-lts-announce/2022/12/msg00022.html
Third Party Advisory https://security.gentoo.org/glsa/202107-27
33
/ 100
moderate-risk
Severity 21/34 · High
Exploitability 3/34 · Minimal
Exposure 9/34 · Low