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Fencer Vulns
critical 9.1

CVE-2023-5841 json

OpenEXR Heap Overflow in Scanline Deep Data Parsing

published 2024-02-01 2 y ago modified 2026-07-18 3 mo ago also EUVD-2023-58123 , JLSEC-2026-133

cvss
9.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 69%
public exploits
0
none known

Summary

Due to a failure in validating the number of scanline samples of a OpenEXR file containing deep scanline data, Academy Software Foundation OpenEX image parsing library version 3.2.1 and prior is susceptible to a heap-based buffer overflow vulnerability. This issue was resolved as of versions v3.2.2 and v3.1.12 of the affected library.

Patch / fix

  • julia OpenEXR_jll 3.2.4+0
  • Academy Software Foundation OpenEXR 3.1.12, 3.2.2
  • openexr Debian 14, Debian 13 3.1.13-1

debian advisories DEBIAN-CVE-2023-5841

  • openexr RHEL 9 3.1.1-2.el9_5.1
  • openexr-libs RHEL 9 3.1.1-2.el9_5.1
  • openexr RHEL 9 3.1.1-2.el9_4.1
  • openexr-libs RHEL 9 3.1.1-2.el9_4.1
  • openexr RHEL 9.2 EUS 3.1.1-2.el9_2.1
  • openexr-libs RHEL 9.2 EUS 3.1.1-2.el9_2.1
  • openexr RHEL 9.0 E4S 3.1.1-2.el9_0.1
  • openexr-libs RHEL 9.0 E4S 3.1.1-2.el9_0.1

red hat advisories RHSA-2024:9548RHSA-2024:8801RHSA-2024:8800RHSA-2024:8802

  • openexr AlmaLinux 9 3.1.1-2.el9_5.1
  • openexr-libs AlmaLinux 9 3.1.1-2.el9_5.1
  • openexr AlmaLinux 9 3.1.1-2.el9_4.1
  • openexr-libs AlmaLinux 9 3.1.1-2.el9_4.1

almalinux advisories ALSA-2024:9548ALSA-2024:8800

  • openexr Rocky Linux 9 3.1.1-2.el9_4.1

rocky linux advisories RLSA-2024:9548RLSA-2024:8800

  • openexr Alpine 3.24, Alpine 3.23, Alpine 3.22 +3 more 3.1.12-r0

alpine advisories ALPINE-CVE-2023-5841

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-5841 updated cvss 9.1

OpenEXR: Heap Overflow in Scanline Deep Data Parsing

  • Red Hat Enterprise Linux 6 OpenEXR, OpenEXR-libs
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 OpenEXR, OpenEXR-libs
    affected: workaround, no fix planned “Will not fix”
  • Red Hat CodeReady Linux Builder (v. 9) openexr-devel 3.1.1-2.el9_5.1, openexr-debuginfo 3.1.1-2.el9_5.1, openexr-debugsource 3.1.1-2.el9_5.1, openexr-libs-debuginfo 3.1.1-2.el9_5.1
    fixed: vendor fix RHSA-2024:9548
  • Red Hat CodeReady Linux Builder EUS (v.9.2) openexr-devel 3.1.1-2.el9_2.1, openexr-debuginfo 3.1.1-2.el9_2.1, openexr-debugsource 3.1.1-2.el9_2.1, openexr-libs-debuginfo 3.1.1-2.el9_2.1
    fixed: vendor fix RHSA-2024:8801
  • Red Hat Enterprise Linux AppStream (v. 9) openexr 3.1.1-2.el9_4.1, openexr 3.1.1-2.el9_5.1, openexr-libs 3.1.1-2.el9_4.1, openexr-libs 3.1.1-2.el9_5.1
    fixed: vendor fix RHSA-2024:8800
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) openexr 3.1.1-2.el9_0.1, openexr-libs 3.1.1-2.el9_0.1
    fixed: vendor fix RHSA-2024:8802
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) openexr 3.1.1-2.el9_2.1, openexr-libs 3.1.1-2.el9_2.1
    fixed: vendor fix RHSA-2024:8801
  • Red Hat Enterprise Linux CRB (v. 9) openexr-devel 3.1.1-2.el9_4.1, openexr-debuginfo 3.1.1-2.el9_4.1, openexr-debugsource 3.1.1-2.el9_4.1, openexr-libs-debuginfo 3.1.1-2.el9_4.1
    fixed: vendor fix RHSA-2024:8800
show 1 more
  • Red Hat Enterprise Linux 7 OpenEXR, OpenEXR-libs Red Hat Enterprise Linux 8 OpenEXR, OpenEXR-libs
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
total
Assessed
17 mo ago

Exploit prediction

1.25% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • takeonme.org https://takeonme.org/cves/CVE-2023-5841.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CNA 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
OSV 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected packages

ecosystem package affected fixed in
julia OpenEXR_jll
<3.2.4+0
3.2.4+0

Affected products

  • Academy Software Foundation OpenEXR

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.