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Fencer Vulns
medium 5.5

CVE-2021-3272 json

jp2_decode in jp2/jp2_dec.c in libjasper in JasPer 2.0.24 has a heap-based buffer over-read when there is an invalid relationship between t…

published 2021-01-27 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-26610

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits
0
none known

Summary

jp2_decode in jp2/jp2_dec.c in libjasper in JasPer 2.0.24 has a heap-based buffer over-read when there is an invalid relationship between the number of channels and the number of image components.

Patch / fix

  • jasper RHEL 8 2.0.14-5.el8
  • jasper-libs RHEL 8 2.0.14-5.el8

red hat advisories RHSA-2021:4235

  • jasper SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +14 more 1.900.14-195.25.1
  • jasper SLES for SAP 15 SP1, SLES for SAP 15, SLES 15-LTSS +12 more 2.0.14-3.19.1
  • jasper SLES 11 SP4-LTSS, SLE Point of Sale 11 SP3 1.900.14-134.33.20.1

suse advisories SUSE-SU-2021:0489-1SUSE-SU-2021:0488-1SUSE-SU-2021:14627-1

  • jasper openSUSE Tumbleweed 2.0.33-1.2
  • jasper openSUSE Leap 15.2 2.0.14-lp152.7.6.1

opensuse advisories openSUSE-SU-2024:10869-1openSUSE-SU-2021:0303-1

  • jasper-libs AlmaLinux 8 2.0.14-5.el8

almalinux advisories ALSA-2021:4235

  • jasper Rocky Linux 8 2.0.14-5.el8

rocky linux advisories RLSA-2021:4235

  • jasper CBL-Mariner 2.0 2.0.32-2

azure linux advisories AZL-6493

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

  • jasper Arch Linux 2.0.25-1

arch linux advisories AVG-1497

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-2021-3272 updated cvss 5.5

jasper: Heap-based buffer over-read in jp2_decode() in jp2_dec.c

  • Red Hat Enterprise Linux 6 jasper, jasper-libs, jasper-utils Red Hat Enterprise Linux 7 jasper, jasper-libs, jasper-utils
    affected: no fix planned “Out of support scope”
  • Red Hat CodeReady Linux Builder (v. 8) jasper-devel 2.0.14-5.el8, jasper-debuginfo 2.0.14-5.el8, jasper-debugsource 2.0.14-5.el8, jasper-libs-debuginfo 2.0.14-5.el8, jasper-utils-debuginfo 2.0.14-5.el8 Red Hat Enterprise Linux AppStream (v. 8) jasper 2.0.14-5.el8, jasper-libs 2.0.14-5.el8
    fixed: vendor fix RHSA-2021:4235
  • Red Hat Enterprise Linux 9 jasper, jasper-libs, jasper-utils
    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

Exploit prediction

1.12% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/jasper-software/jasper/issues/259 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

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.