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Fencer Vulns
high 7.0

CVE-2023-27899 json

Incorrect Authorization in Jenkins Core

published 2023-03-08 3 y ago modified 2026-09-08 2 mo ago also BIT-jenkins-2023-27899 , EUVD-2023-1031 , GHSA-hf9h-vv4m-2f33

cvss
7.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 14%
public exploits
0
none known

Summary

Jenkins 2.393 and earlier, LTS 2.375.3 and earlier creates a temporary file in the default temporary directory with the default permissions for newly created files when uploading a plugin for installation, potentially allowing attackers with access to the Jenkins controller file system to read and write the file before it is used, potentially resulting in arbitrary code execution.

Patch / fix

  • maven org.jenkins-ci.main:jenkins-core 2.375.4, 2.387.1, 2.394
  • bitnami jenkins 2.394.0
  • Jenkins Project Jenkins 2.394
  • jenkins ocp tools 4.11 2.401.1.1686831596-3.el8
  • jenkins-2-plugins ocp tools 4.11 4.11.1686831822-1.el8
  • haproxy openshift 4.10 2.2.19-4.el8
  • jenkins openshift 4.10 2.387.1.1680701869-1.el8
  • haproxy22 openshift 4.10 2.2.19-4.el8
  • openshift openshift 4.10 4.10.0-202303221742.p0.g16bcd69.assembly.stream.el7
  • openshift openshift 4.10 4.10.0-202303221742.p0.g16bcd69.assembly.stream.el8
  • jenkins-2-plugins openshift 4.10 4.10.1680703106-1.el8

red hat advisories RHSA-2023:3663RHSA-2023:1655

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-2023-27899 updated cvss 7.0

Jenkins: Temporary plugin file created with insecure permissions

  • Red Hat OpenShift Container Platform 3.11 jenkins
    affected: no fix planned “Out of support scope”
  • Red Hat OpenShift Developer Tools and Services for OCP 4.11 for RHEL 8 jenkins 2.401.1.1686831596-3.el8
    fixed: vendor fix RHSA-2023:3663
  • Red Hat OpenShift Container Platform 4.10 jenkins 2.387.1.1680701869-1.el8
    fixed: vendor fix RHSA-2023:1655
  • Red Hat OpenShift Developer Tools and Services for OCP 4.11 for RHEL 8 jenkins-2-plugins 4.11.1686831822-1.el8 Red Hat OpenShift Container Platform 4.10 haproxy 2.2.19-4.el8, haproxy22 2.2.19-4.el8, perf 4.18.0-305.85.1.el8_4, kernel 4.18.0-305.85.1.el8_4, bpftool 4.18.0-305.85.1.el8_4, toolbox 0.0.9-1.rhaos4.10.el8, +46 more
    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
total
Assessed
20 mo ago

Exploit prediction

0.23% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
GitHub 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
OSV 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
maven org.jenkins-ci.main:jenkins-core
>=2.376, <2.387.1
<2.375.4
>=2.388, <2.394
2.387.1
2.375.4
2.394
bitnami jenkins
<2.394.0
2.394.0

Affected products

  • Jenkins Project Jenkins

Classification

Weakness
Technology feeds

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.