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Fencer Vulns
medium 5.9

CVE-2023-4043 json

Parsson DoS when parsing numbers from untrusted sources

published 2023-11-03 3 y ago modified 2026-06-17 4 mo ago also GHSA-g8p6-p27c-52fx , EUVD-2023-2963

cvss
5.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits
0
none known

Summary

In Eclipse Parsson before versions 1.1.4 and 1.0.5, Parsing JSON from untrusted sources can lead malicious actors to exploit the fact that the built-in support for parsing numbers with large scale in Java has a number of edge cases where the input text of a number can lead to much larger processing time than one would expect.

To mitigate the risk, parsson put in place a size limit for the numbers as well as their scale.

Patch / fix

  • maven org.eclipse.parsson:project 1.0.5, 1.1.4
  • Eclipse Foundation Parsson 1.0.5, 1.1.4
  • eap8-log4j jboss enterprise application platform 8.0 2.19.0-2.redhat_00001.1.el9eap
  • eap8-parsson jboss enterprise application platform 8.0 1.1.5-1.redhat_00001.1.el9eap
  • eap8-wildfly jboss enterprise application platform 8.0 8.0.1-3.GA_redhat_00002.1.el9eap
  • eap8-apache-sshd jboss enterprise application platform 8.0 2.12.0-1.redhat_00001.1.el9eap
  • eap8-lucene-core jboss enterprise application platform 8.0 8.11.2-2.redhat_00001.1.el9eap
  • eap8-lucene-join jboss enterprise application platform 8.0 8.11.2-2.redhat_00001.1.el9eap
  • eap8-lucene-solr jboss enterprise application platform 8.0 8.11.2-2.redhat_00001.1.el9eap
  • eap8-eclipse-jgit jboss enterprise application platform 8.0 6.6.1.202309021850-1.r_redhat_00001.1.el9eap

red hat advisories RHSA-2024:1193RHSA-2024:1192

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-2023-4043 updated cvss 7.5

parsson: Denial of Service due to large number parsing

  • Red Hat build of Apache Camel 4 for Quarkus 3 parsson
    affected: workaround, no fix available “Avoid processing untrusted sources content in order to minimize the chance for Denial of Service attack.”
  • Red Hat Build of Keycloak parsson
    affected: workaround, no fix planned “Avoid processing untrusted sources content in order to minimize the chance for Denial of Service attack.”
  • Red Hat OpenShift Dev Spaces devspaces/pluginregistry-rhel8
    affected: workaround, no fix available “Avoid processing untrusted sources content in order to minimize the chance for Denial of Service attack.”
  • Red Hat Cryostat 2 on RHEL 8 cryostat-tech-preview/cryostat-rhel8 2.4.0-3, cryostat-tech-preview/jfr-datasource-rhel8 2.4.0-3, cryostat-tech-preview/cryostat-reports-rhel8 2.4.0-3, cryostat-tech-preview/cryostat-rhel8-operator 2.4.0-5, cryostat-tech-preview/cryostat-operator-bundle 2.4.0-3, cryostat-tech-preview/cryostat-grafana-dashboard-rhel8 2.4.0-4
    fixed: vendor fix “Avoid processing untrusted sources content in order to minimize the chance for Denial of Service attack.” RHSA-2024:0530
  • Red Hat EAP 8.0.1
    fixed: vendor fix “Avoid processing untrusted sources content in order to minimize the chance for Denial of Service attack.” RHSA-2024:1194
  • Red Hat build of Quarkus 3.2.10.Final parsson 1.1.5.redhat-00001
    fixed: vendor fix “Avoid processing untrusted sources content in order to minimize the chance for Denial of Service attack.” RHSA-2024:0722
  • Red Hat JBoss EAP 8.0 for RHEL 8 eap8-log4j 2.19.0-2.redhat_00001.1.el8eap, eap8-parsson 1.1.5-1.redhat_00001.1.el8eap, eap8-wildfly 8.0.1-3.GA_redhat_00002.1.el8eap, eap8-apache-sshd 2.12.0-1.redhat_00001.1.el8eap, eap8-lucene-core 8.11.2-2.redhat_00001.1.el8eap, eap8-lucene-join 8.11.2-2.redhat_00001.1.el8eap, +9 more
    fixed: vendor fix “Avoid processing untrusted sources content in order to minimize the chance for Denial of Service attack.” RHSA-2024:1192
  • Red Hat JBoss EAP 8.0 for RHEL 9 eap8-log4j 2.19.0-2.redhat_00001.1.el9eap, eap8-parsson 1.1.5-1.redhat_00001.1.el9eap, eap8-wildfly 8.0.1-3.GA_redhat_00002.1.el9eap, eap8-apache-sshd 2.12.0-1.redhat_00001.1.el9eap, eap8-lucene-core 8.11.2-2.redhat_00001.1.el9eap, eap8-lucene-join 8.11.2-2.redhat_00001.1.el9eap, +9 more
    fixed: vendor fix “Avoid processing untrusted sources content in order to minimize the chance for Denial of Service attack.” RHSA-2024:1193
show 3 more
  • Red Hat RHBOAC camel-quarkus 3 (camel-4.0/quarkus-3.2)
    fixed: vendor fix “Avoid processing untrusted sources content in order to minimize the chance for Denial of Service attack.” RHSA-2024:0789
  • Red Hat RHINT Camel-Springboot 4.0.3
    fixed: vendor fix “Avoid processing untrusted sources content in order to minimize the chance for Denial of Service attack.” RHSA-2024:0793
  • Red Hat build of Apache Camel for Spring Boot 3 parsson Red Hat build of Apicurio Registry 2 parsson Red Hat build of Quarkus 3.2.10.Final jna 5.8.0, lit 2.7.4, bson 4.9.1, db2 1.18.3, h2 2.2.220, jdom 1.1.3, +1046 more Red Hat Fuse 7 parsson Red Hat streams for Apache Kafka parsson
    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
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.89% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • gitlab.eclipse.org https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/13 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
maven org.eclipse.parsson:project
>=1.1.0, <1.1.4
<1.0.5
1.1.4
1.0.5

Affected products

  • Eclipse Foundation Parsson

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.