Vulnerability Details : CVE-2021-3477
There's a flaw in OpenEXR's deep tile sample size calculations in versions before 3.0.0-beta. An attacker who is able to submit a crafted file to be processed by OpenEXR could trigger an integer overflow, subsequently leading to an out-of-bounds read. The greatest risk of this flaw is to application availability.
Vulnerability category: Overflow
Products affected by CVE-2021-3477
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:*
- cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-3477
0.07%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 31 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-3477
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
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-2021-3477
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by:
- nvd@nist.gov (Secondary)
- secalert@redhat.com (Primary)
-
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-2021-3477
-
https://security.gentoo.org/glsa/202107-27
OpenEXR: Multiple vulnerabilities (GLSA 202107-27) — Gentoo securityThird Party Advisory
-
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26956
26956 - openexr:openexr_deeptiles_fuzzer: Heap-buffer-overflow in Imf_2_5::DeepTiledInputFile::readPixelSampleCounts - oss-fuzzIssue Tracking;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2021/07/msg00001.html
[SECURITY] [DLA 2701-1] openexr security updateMailing List;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=1939159
1939159 – (CVE-2021-3477) CVE-2021-3477 OpenEXR: Heap-buffer-overflow in Imf_2_5::DeepTiledInputFile::readPixelSampleCountsIssue Tracking;Patch;Third Party Advisory
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