Vulnerability Details : CVE-2021-20298
A flaw was found in OpenEXR's B44Compressor. This flaw allows an attacker who can submit a crafted file to be processed by OpenEXR, to exhaust all memory accessible to the application. The highest threat from this vulnerability is to system availability.
Vulnerability category: Memory Corruption
Products affected by CVE-2021-20298
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-20298
0.46%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 75 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-20298
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2021-20298
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The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.Assigned by: secalert@redhat.com (Secondary)
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The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-20298
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https://access.redhat.com/security/cve/CVE-2021-20298
CVE-2021-20298- Red Hat Customer PortalThird Party Advisory
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https://github.com/AcademySoftwareFoundation/openexr/commit/85fd638ae0d5fa132434f4cbf32590261c1dba97
reduce B44 _tmpBufferSize (was allocating two bytes per byte) (#843) · AcademySoftwareFoundation/openexr@85fd638 · GitHubPatch;Third Party Advisory
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https://github.com/AcademySoftwareFoundation/openexr/pull/843
reduce B44 _tmpBufferSize (was allocating two bytes per byte) by peterhillman · Pull Request #843 · AcademySoftwareFoundation/openexr · GitHubPatch;Third Party Advisory
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https://lists.debian.org/debian-lts-announce/2022/12/msg00022.html
[SECURITY] [DLA 3236-1] openexr security updateMailing List;Third Party Advisory
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https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25913
25913 - openexr:openexr_exrenvmap_fuzzer: Out-of-memory in openexr_exrenvmap_fuzzer - oss-fuzzMailing List;Third Party Advisory
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https://bugzilla.redhat.com/show_bug.cgi?id=1939156
1939156 – (CVE-2021-20298) CVE-2021-20298 OpenEXR: Out-of-memory in B44CompressorIssue Tracking;Third Party Advisory
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