Vulnerability Details : CVE-2021-20300
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.
Vulnerability category: Overflow
Products affected by CVE-2021-20300
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-20300
0.11%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 44 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-20300
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.1
|
HIGH | AV:N/AC:M/Au:N/C:N/I:N/A:C |
8.6
|
6.9
|
NIST | |
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2021-20300
-
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.Assigned by:
- nvd@nist.gov (Secondary)
- secalert@redhat.com (Primary)
References for CVE-2021-20300
-
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25562
25562 - openexr:openexr_scanlines_fuzzer: Integer-overflow in Imf_2_5::hufUncompress - oss-fuzzThird Party Advisory
-
https://github.com/AcademySoftwareFoundation/openexr/pull/836
prevent overflow in hufUncompress if nBits is large by peterhillman · Pull Request #836 · AcademySoftwareFoundation/openexr · GitHubPatch;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2022/12/msg00022.html
[SECURITY] [DLA 3236-1] openexr security updateMailing List;Third Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=1939153
1939153 – (CVE-2021-20300) CVE-2021-20300 OpenEXR: Integer-overflow in Imf_2_5::hufUncompressIssue Tracking;Third Party Advisory
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