Medium severity · published Mar 4, 2022
CVE-2021-20303
A flaw found in function dataWindowForTile() of IlmImf/ImfTiledMisc.cpp
6.1
CVSS
0.8%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
Low
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 57% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
10.0 · source: NVD
OP
Openexr · Openexr
before 2.5.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-20303
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-20303
Third Party Advisory
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25505
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1939151
Patch
https://github.com/AcademySoftwareFoundation/openexr/pull/831
Mailing List
https://lists.debian.org/debian-lts-announce/2022/12/msg00022.html
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