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CVE

CVE-2021-20296

A flaw was found in OpenEXR in versions before 3.0.0-beta. A crafted input file supplied by an attacker, that is process

A flaw was found in OpenEXR in versions before 3.0.0-beta. A crafted input file supplied by an attacker, that is processed by the Dwa decompression functionality of OpenEXR's IlmImf library, could cause a NULL pointer dereference. The highest threat from this vulnerability is to system availability.

MEDIUM · CVSS 5.3 EPSS 0.01014
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  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-476NULL Pointer Dereference
▤

Affected Products & Versions

3
openexr< 2.4.3
openexr>= 2.5.0 and < 2.5.4
debian linuxall versions
▣

Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD01 Apr 2021 · 02:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
⚑

Vendor Advisories

5
usnUSN-5620-1
usnUSN-4996-2
usnUSN-4996-1
suse-csafopenSUSE-SU-2021:0670-1
suse-csafSUSE-SU-2021:1489-1
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=24854Issue TrackingMailing ListPatchThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1939141Issue TrackingPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/07/msg00001.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00022.htmlMailing ListThird Party Advisory
https://security.gentoo.org/glsa/202107-27Third Party Advisory
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