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NVD / CVE Program· CNA redhat

CVE-2020-27828: There's a flaw in jasper's jpc encoder in versions prior to 2.0.23.

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.3% (FIRST EPSS); higher than 72.2% of all records.
  • Someone with local access to the system can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: jasper-devel (AlmaLinux:8) 2.0.14-5.el8; jasper-libs (AlmaLinux:8) 2.0.14-5.el8; jasper (openSUSE:Leap 15.2) 2.0.14-lp152.7.6.1.

Low priority for now. Upgrade to jasper-devel (AlmaLinux:8) 2.0.14-5.el8; jasper-libs (AlmaLinux:8) 2.0.14-5.el8; jasper (openSUSE:Leap 15.2) 2.0.14-lp152.7.6.1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

There's a flaw in jasper's jpc encoder in versions prior to 2.0.23. Crafted input provided to jasper by an attacker could cause an arbitrary out-of-bounds write. This could potentially affect data confidentiality, integrity, or application availability.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Dec 11, 2020
Updated
Jun 16, 2026
EPSS
1.3% · 72th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.3%

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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  • when exploit code appears or is weaponized
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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
jasper projectjasper
fedoraprojectfedora

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • fedoraproject fedora32
  • fedoraproject fedora33
  • jasper project jasperbefore 2.0.23

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • n/a jasper

    • prior to 2.0.23affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:8jasper-develbefore 2.0.14-5.el82.0.14-5.el8
AlmaLinux:8jasper-libsbefore 2.0.14-5.el82.0.14-5.el8
openSUSE:Leap 15.2jasperbefore 2.0.14-lp152.7.6.12.0.14-lp152.7.6.1
Red Hat:enterprise_linux:8::appstreamjasperbefore 0:2.0.14-5.el80:2.0.14-5.el8
Red Hat:enterprise_linux:8::appstreamjasper-debuginfobefore 0:2.0.14-5.el80:2.0.14-5.el8
Red Hat:enterprise_linux:8::appstreamjasper-debugsourcebefore 0:2.0.14-5.el80:2.0.14-5.el8
Red Hat:enterprise_linux:8::appstreamjasper-libsbefore 0:2.0.14-5.el80:2.0.14-5.el8
Red Hat:enterprise_linux:8::appstreamjasper-libs-debuginfobefore 0:2.0.14-5.el80:2.0.14-5.el8
Red Hat:enterprise_linux:8::appstreamjasper-utils-debuginfobefore 0:2.0.14-5.el80:2.0.14-5.el8
Red Hat:enterprise_linux:8::crbjasper-develbefore 0:2.0.14-5.el80:2.0.14-5.el8
Rocky Linux:8jasperbefore 0:2.0.14-5.el80:2.0.14-5.el8
SUSE:HPE Helion OpenStack 8jasperbefore 1.900.14-195.25.11.900.14-195.25.1
SUSE:Linux Enterprise Module for Basesystem 15 SP2jasperbefore 2.0.14-3.19.12.0.14-3.19.1
SUSE:Linux Enterprise Point of Sale 11 SP3jasperbefore 1.900.14-134.33.20.11.900.14-134.33.20.1

Same product

jasper project: all records

Other highest-scoring records for the same primary product.

  • CVE-2008-3520Multiple integer overflows in JasPer 1.900.1 might allow context-dependent attackers to have an unknown impact via a crafted image file, rel
    38Monitor
  • CVE-2015-8751Integer overflow in the jas_matrix_create function in JasPer allows context-dependent attackers to have unspecified impact via a crafted JPE
    36Monitor
  • CVE-2018-19541An issue was discovered in JasPer 1.900.8, 1.900.9, 1.900.10, 1.900.11, 1.900.12, 1.900.13, 1.900.14, 1.900.15, 1.900.16, 1.900.17, 1.900.18
    36Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2018-20584Dec 30, 2018 · JasPer 2.0.14 allows remote attackers to cause a denial of service (application hang) via an attempted conversion to the jp2 format.
    27Monitor
  • ← EarlierCVE-2018-20622Dec 31, 2018 · JasPer 2.0.14 has a memory leak in base/jas_malloc.c in libjasper.a when "--output-format jp2" is used.
    27Monitor
  • Later →CVE-2021-3272Jan 27, 2021 · 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 th
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
almalinux:jasper-devel2.0.14-5.el8 · AlmaLinux:8Package registry (OSV)
almalinux:jasper-libs2.0.14-5.el8 · AlmaLinux:8Package registry (OSV)
opensuse:jasper2.0.14-lp152.7.6.1 · openSUSE:Leap 15.2Package registry (OSV)
red hat:jasper0:2.0.14-5.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:jasper-debuginfo0:2.0.14-5.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:jasper-debugsource0:2.0.14-5.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:jasper-devel0:2.0.14-5.el8 · Red Hat:enterprise_linux:8::crbPackage registry (OSV)
red hat:jasper-libs0:2.0.14-5.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:jasper-libs-debuginfo0:2.0.14-5.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:jasper-utils-debuginfo0:2.0.14-5.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
rocky linux:jasper0:2.0.14-5.el8 · Rocky Linux:8Package registry (OSV)
suse:jasper2.0.14-3.19.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP2Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-20 · Improper Input Validation

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (4 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records