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CVE-2021-23215

An integer overflow leading to a heap-buffer overflow was found in the DwaCompressor of OpenEXR...

5.5 MediumFix available

An integer overflow leading to a heap-buffer overflow was found in the DwaCompressor of OpenEXR in versions before 3.0.1. An attacker could use this flaw to crash an application compiled with OpenEXR.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

1.10%Up 0.5 points since Jun 9, 2021
90%50%10%1%

What each source reports

NVD Score used 5.5

An integer overflow leading to a heap-buffer overflow was found in the DwaCompressor of OpenEXR in versions before 3.0.1. An attacker could use this flaw to crash an application compiled with OpenEXR.

Record
CVE-2021-23215
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:N/I:N/A:P
Weakness
CWE-400, CWE-190
Updated
2026-11-02
CVE List No score

An integer overflow leading to a heap-buffer overflow was found in the DwaCompressor of OpenEXR in versions before 3.0.1. An attacker could use this flaw to crash an application compiled with OpenEXR.

Record
CVE-2021-23215
Weakness
CWE-400
Updated
2026-11-02
EUVDEUVD-2021-10319 No score

An integer overflow leading to a heap-buffer overflow was found in the DwaCompressor of OpenEXR in versions before 3.0.1. An attacker could use this flaw to crash an application compiled with OpenEXR.

Record
EUVD-2021-10319
Updated
2026-11-03
GitHub AdvisoriesGHSA-4463-879q-57jx 5.5

An integer overflow leading to a heap-buffer overflow was found in the DwaCompressor of OpenEXR...

An integer overflow leading to a heap-buffer overflow was found in the DwaCompressor of OpenEXR in versions before 3.0.1. An attacker could use this flaw to crash an application compiled with OpenEXR.

Record
GHSA-4463-879q-57jx
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-190, CWE-400
Updated
2026-11-02
OSVALPINE-CVE-2021-23215 5.5

An integer overflow leading to a heap-buffer overflow was found in the DwaCompressor of OpenEXR in versions before 3.0.1. An attacker could use this flaw to crash an application compiled with OpenEXR.

Record
ALPINE-CVE-2021-23215
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-03
OSVAZL-44532 5.5

CVE-2021-23215 affecting package OpenEXR 2.3.0-6

An integer overflow leading to a heap-buffer overflow was found in the DwaCompressor of OpenEXR in versions before 3.0.1. An attacker could use this flaw to crash an application compiled with OpenEXR.

Record
AZL-44532
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-05
Show 10 moreShow less
OSV 5.5

An integer overflow leading to a heap-buffer overflow was found in the DwaCompressor of OpenEXR in versions before 3.0.1. An attacker could use this flaw to crash an application compiled with OpenEXR.

Record
CVE-2021-23215
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2021-23215 5.5

An integer overflow leading to a heap-buffer overflow was found in the DwaCompressor of OpenEXR in versions before 3.0.1. An attacker could use this flaw to crash an application compiled with OpenEXR.

Record
DEBIAN-CVE-2021-23215
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVOESA-2021-1238 8.8

OpenEXR security update

OpenEXR is a high dynamic-range (HDR) image file format originally developed by Industrial Light & Magic for use in computer imaging applications.

Security Fix(es):

An integer overflow leading to a heap-buffer overflow was found in the DwaCompressor of OpenEXR in versions before 3.0.1. An attacker could use this flaw to crash an application compiled with OpenEXR. This is a different flaw from CVE-2021-23215.(CVE-2021-26260)

An integer overflow leading to a heap-buffer overflow was found in the DwaCompressor of OpenEXR in versions before 3.0.1. An attacker could use this flaw to crash an application compiled with OpenEXR.(CVE-2021-23215)

A heap-buffer overflow was found in the copyIntoFrameBuffer function of OpenEXR in versions before 3.0.1. An attacker could use this flaw to execute arbitrary code with the permissions of the user running the application compiled against OpenEXR.(CVE-2021-23169)

Record
OESA-2021-1238
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2021-23215 5.5

An integer overflow leading to a heap-buffer overflow was found in the DwaCompressor of OpenEXR in versions before 3.0.1. An attacker could use this flaw to crash an application compiled with OpenEXR.

Record
UBUNTU-CVE-2021-23215
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVMGASA-2021-0326 No score

Updated openexr packages fix security vulnerabilities

Updated openexr packages fix security vulnerabilities:

It was discovered that OpenEXR incorrectly handled certain malformed EXR image files. If a user were tricked into opening a crafted EXR image file, a remote attacker could cause a denial of service, or possibly execute arbitrary code (CVE-2021-3474, CVE-2021-3475, CVE-2021-3476, CVE-2021-3477, CVE-2021-3478, CVE-2021-3479, CVE-2021-3598, CVE-2021-3605, CVE-2021-20296, CVE-2021-23169, CVE-2021-23215, CVE-2021-26260).

Record
MGASA-2021-0326
Updated
2026-11-02
OSVopenSUSE-SU-2021:0670-1 No score

Security update for openexr

This update for openexr fixes the following issues:

  • CVE-2021-23215: Fixed an integer-overflow in Imf_2_5:DwaCompressor:initializeBuffers (bsc#1185216).
  • CVE-2021-26260: Fixed an Integer-overflow in Imf_2_5:DwaCompressor:initializeBuffers (bsc#1185217).
  • CVE-2021-20296: Fixed a Null Pointer dereference in Imf_2_5:hufUncompress (bsc#1184355).
  • CVE-2021-3477: Fixed a Heap-buffer-overflow in Imf_2_5::DeepTiledInputFile::readPixelSampleCounts (bsc#1184353).
  • CVE-2021-3479: Fixed an Out-of-memory caused by allocation of a very large buffer (bsc#1184354).

This update was imported from the SUSE:SLE-15:Update update project.

Record
openSUSE-SU-2021:0670-1
Updated
2026-11-02
OSVSUSE-SU-2021:1489-1 No score

Security update for openexr

This update for openexr fixes the following issues:

  • CVE-2021-23215: Fixed an integer-overflow in Imf_2_5:DwaCompressor:initializeBuffers (bsc#1185216).
  • CVE-2021-26260: Fixed an Integer-overflow in Imf_2_5:DwaCompressor:initializeBuffers (bsc#1185217).
  • CVE-2021-20296: Fixed a Null Pointer dereference in Imf_2_5:hufUncompress (bsc#1184355).
  • CVE-2021-3477: Fixed a Heap-buffer-overflow in Imf_2_5::DeepTiledInputFile::readPixelSampleCounts (bsc#1184353).
  • CVE-2021-3479: Fixed an Out-of-memory caused by allocation of a very large buffer (bsc#1184354).
Record
SUSE-SU-2021:1489-1
Updated
2026-11-02
OSVUSN-4996-1 No score

openexr vulnerabilities

It was discovered that OpenEXR incorrectly handled certain malformed EXR image files. If a user were tricked into opening a crafted EXR image file, a remote attacker could cause a denial of service, or possibly execute arbitrary code.

Record
USN-4996-1
Updated
2026-11-02
OSVUSN-4996-2 No score

openexr vulnerabilities

USN-4996-1 fixed several vulnerabilities in OpenEXR. This update provides the corresponding update for Ubuntu 16.04 ESM.

Original advisory details:

It was discovered that OpenEXR incorrectly handled certain malformed EXR image files. If a user were tricked into opening a crafted EXR image file, a remote attacker could cause a denial of service, or possibly execute arbitrary code.

Record
USN-4996-2
Updated
2026-11-02
OSVUSN-5620-1 No score

openexr vulnerabilities

It was discovered that OpenEXR incorrectly handled certain malformed EXR image files. If a user were tricked into opening a crafted EXR image file, a remote attacker could cause a denial of service, or possibly execute arbitrary code. These issues only affected Ubuntu 20.04 ESM. (CVE-2021-3598, CVE-2021-3605, CVE-2021-20296, CVE-2021-23215, CVE-2021-26260)

It was discovered that OpenEXR incorrectly handled certain EXR image files. An attacker could possibly use this issue to cause a crash or execute arbitrary code. (CVE-2021-3933)

It was discovered that OpenEXR incorrectly handled certain EXR image files. An attacker could possibly use this issue to cause a crash. (CVE-2021-3941)

Record
USN-5620-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
openexr
Alpine:v3.15
 before 3.1.1-r0
3.1.1-r0
openexr
Alpine:v3.16
 before 3.1.1-r0
3.1.1-r0
openexr
Alpine:v3.17
 before 3.1.1-r0
3.1.1-r0
openexr
Alpine:v3.18
 before 3.1.1-r0
3.1.1-r0
openexr
Alpine:v3.19
 before 3.1.1-r0
3.1.1-r0
openexr
Alpine:v3.20
 before 3.1.1-r0
3.1.1-r0
openexr
Alpine:v3.21
 before 3.1.1-r0
3.1.1-r0
openexr
Alpine:v3.22
 before 3.1.1-r0
3.1.1-r0
openexr
Alpine:v3.23
 before 3.1.1-r0
3.1.1-r0
openexr
Alpine:v3.24
 before 3.1.1-r0
3.1.1-r0
Show 20 moreShow less
Affected packages
PackageAffectedFixed
OpenEXR
Azure Linux:3
 through 2.3.0-6 None known
openexr
Debian:12
 before 2.5.7-1
2.5.7-1
openexr
Debian:13
 before 2.5.7-1
2.5.7-1
openexr
Debian:14
 before 2.5.7-1
2.5.7-1
openexr
Debian:9
From an advisory covering 11 CVEs
 before 2.2.0-11+deb9u3, plus listed versions
2.2.0-112.2.0-11+deb9u12.2.0-11+deb9u2
2.2.0-11+deb9u3
openexr
Debian:10
From an advisory covering 22 CVEs
 before 2.2.1-4.1+deb10u2, plus listed versions
2.2.1-4.12.2.1-4.1+deb10u1
2.2.1-4.1+deb10u2
openexr
Debian:11
From an advisory covering 7 CVEs
 before 2.5.4-2+deb11u1, plus listed versions
2.5.4-2
2.5.4-2+deb11u1
openexr
Mageia:7
From an advisory covering 12 CVEs
 before 2.3.0-2.4.mga7
2.3.0-2.4.mga7
openexr
Mageia:8
From an advisory covering 12 CVEs
 before 2.5.7-1.mga8
2.5.7-1.mga8
OpenEXR
openEuler:20.03-LTS-SP1
From an advisory covering 3 CVEs
 before 2.2.0-20.oe1
2.2.0-20.oe1
openexr
SUSE:Linux Enterprise Module for Desktop Applications 15 SP2
From an advisory covering 5 CVEs
 before 2.2.1-3.27.1
2.2.1-3.27.1
openexr
SUSE:Linux Enterprise Module for Desktop Applications 15 SP3
From an advisory covering 5 CVEs
 before 2.2.1-3.27.1
2.2.1-3.27.1
openexr
Ubuntu:Pro:16.04:LTS
 before 2.2.0-10ubuntu2.6+esm1, plus listed versions
2.2.0-1ubuntu32.2.0-7ubuntu12.2.0-9ubuntu12.2.0-10ubuntu22.2.0-10ubuntu2.1
Show 4 moreShow less
2.2.0-10ubuntu2.22.2.0-10ubuntu2.32.2.0-10ubuntu2.42.2.0-10ubuntu2.6
2.2.0-10ubuntu2.6+esm1
openexr
Ubuntu:18.04:LTS
 before 2.2.0-11.1ubuntu1.7, plus listed versions
2.2.0-11ubuntu12.2.0-11.1ubuntu12.2.0-11.1ubuntu1.12.2.0-11.1ubuntu1.22.2.0-11.1ubuntu1.32.2.0-11.1ubuntu1.42.2.0-11.1ubuntu1.6
2.2.0-11.1ubuntu1.7
openexr
Ubuntu:Pro:20.04:LTS
 before 2.3.0-6ubuntu0.5+esm1, plus listed versions
2.2.1-4.1ubuntu12.3.0-62.3.0-6build12.3.0-6ubuntu0.12.3.0-6ubuntu0.22.3.0-6ubuntu0.32.3.0-6ubuntu0.5
2.3.0-6ubuntu0.5+esm1
openexr
Ubuntu:18.04:LTS
From an advisory covering 5 CVEs
 before 2.2.0-11.1ubuntu1.7, plus listed versions
2.2.0-11ubuntu12.2.0-11.1ubuntu12.2.0-11.1ubuntu1.12.2.0-11.1ubuntu1.22.2.0-11.1ubuntu1.32.2.0-11.1ubuntu1.42.2.0-11.1ubuntu1.6
2.2.0-11.1ubuntu1.7
openexr
Ubuntu:Pro:16.04:LTS
From an advisory covering 5 CVEs
 before 2.2.0-10ubuntu2.6+esm1, plus listed versions
2.2.0-1ubuntu32.2.0-7ubuntu12.2.0-9ubuntu12.2.0-10ubuntu22.2.0-10ubuntu2.1
Show 4 moreShow less
2.2.0-10ubuntu2.22.2.0-10ubuntu2.32.2.0-10ubuntu2.42.2.0-10ubuntu2.6
2.2.0-10ubuntu2.6+esm1
openexr
Ubuntu:Pro:20.04:LTS
From an advisory covering 7 CVEs
 before 2.3.0-6ubuntu0.5+esm1, plus listed versions
2.2.1-4.1ubuntu12.3.0-62.3.0-6build12.3.0-6ubuntu0.12.3.0-6ubuntu0.22.3.0-6ubuntu0.32.3.0-6ubuntu0.5
2.3.0-6ubuntu0.5+esm1
openexr
Ubuntu:Pro:22.04:LTS
From an advisory covering 7 CVEs
 before 2.5.7-1ubuntu0.1~esm1, plus listed versions
2.5.4-22.5.7-1
2.5.7-1ubuntu0.1~esm1
openexr
openSUSE:Leap 15.2
From an advisory covering 5 CVEs
 before 2.2.1-lp152.7.14.1
2.2.1-lp152.7.14.1

History

History
RecordedChangedSources
affected
factsOSV
affected, aliases, referencesOSV
aliases, productsEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-23215 is a medium vulnerability (CVSS 5.5) in Academysoftwarefoundation Openexr, published May 4, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.10%, the 65th percentile. Fixed in openexr 3.1.1-r0.

References

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