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Fencer Intel
critical 9.8

CVE-2019-17571 in the critical feed json

Deserialization of Untrusted Data in Log4j

published 6y ago modified 4mo ago also GHSA-2qrg-x229-3v8q , EUVD-2020-0246

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
70.0%
EPSS 70.0% chance of exploitation in 30 days, percentile 99.3%
public exploits
0
none known

Summary

Included in Log4j 1.2 is a SocketServer class that is vulnerable to deserialization of untrusted data which can be exploited to remotely execute arbitrary code when combined with a deserialization gadget when listening to untrusted network traffic for log data. This affects Log4j versions up to 1.2 up to 1.2.17.

Patch / fix

  • apache bookkeeper 4.14.3
  • apache-log4j1.2 Debian 14, Debian 13, Debian 12 1.2.17-9

debian advisories DEBIAN-CVE-2019-17571

  • apache-log4j1.2 Ubuntu 18.04 LTS 1.2.17-8+deb10u1build0.18.04.1
  • apache-log4j1.2 Ubuntu Pro 16.04 LTS 1.2.17-7ubuntu1+esm1

ubuntu advisories UBUNTU-CVE-2019-17571

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • eap7-jboss-ec2-eap jboss enterprise application platform 7 7.0.8-1.GA_redhat_1.ep7.el6
  • eap7-jboss-ec2-eap jboss enterprise application platform 7 7.0.8-1.GA_redhat_1.ep7.el7
  • eap7-jboss-ec2-eap-samples jboss enterprise application platform 7 7.0.8-1.GA_redhat_1.ep7.el6
  • eap7-jboss-ec2-eap-samples jboss enterprise application platform 7 7.0.8-1.GA_redhat_1.ep7.el7
  • log4j jboss enterprise application platform 5 1.2.14-19.patch_01.ep5.el5
  • log4j jboss enterprise application platform 5 1.2.14-19.patch_01.ep5.el6
  • jboss-ec2-eap jboss enterprise application platform 6 7.5.17-1.Final_redhat_4.ep6.el6
  • jboss-ec2-eap-samples jboss enterprise application platform 6 7.5.17-1.Final_redhat_4.ep6.el6

red hat advisories RHSA-2017:2811RHSA-2022:5053RHSA-2017:3399RHSA-2017:2638RHSA-2017:2423RHSA-2017:1801

  • log4j SLES 11 SP4-LTSS, SLE Point of Sale 11 SP3 1.2.15-26.32.14.1
  • log4j SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +16 more 1.2.15-126.3.1
  • log4j SLE Module for Development Tools 15 SP1, SLE Module for Development Tools 15, SLE Module for Basesystem 15 SP1 +1 more 1.2.17-5.3.1

suse advisories SUSE-SU-2020:14267-1SUSE-SU-2020:0054-1SUSE-SU-2020:0053-1

  • log4j openSUSE Leap 15.1 1.2.17-lp151.5.3.1
  • log4j-mini openSUSE Leap 15.1 1.2.17-lp151.5.3.1

opensuse advisories openSUSE-SU-2020:0051-1

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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-2019-17571 updated cvss 9.8

log4j: deserialization of untrusted data in SocketServer

  • Red Hat Enterprise Linux 5 log4j
    affected: workaround, no fix planned “Will not fix”
  • Red Hat JBoss BRMS 5 log4j Red Hat JBoss SOA Platform 5 log4j
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux Client (v. 7) log4j 1.2.17-16.el7_4 Red Hat Enterprise Linux Client Optional (v. 7) log4j-manual 1.2.17-16.el7_4, log4j-javadoc 1.2.17-16.el7_4 Red Hat Enterprise Linux ComputeNode (v. 7) log4j 1.2.17-16.el7_4 Red Hat Enterprise Linux ComputeNode Optional (v. 7) log4j-manual 1.2.17-16.el7_4, log4j-javadoc 1.2.17-16.el7_4
    fixed: vendor fix RHSA-2017:2423
  • Red Hat Enterprise Linux Server (v. 6 ELS) log4j 1.2.14-6.7.el6_10
    fixed: vendor fix RHSA-2022:5053
  • Red Hat Enterprise Linux Server (v. 7) log4j 1.2.17-16.el7_4
    fixed: vendor fix RHSA-2017:2423
  • Red Hat Enterprise Linux Server Optional (v. 6 ELS) log4j-manual 1.2.14-6.7.el6_10, log4j-javadoc 1.2.14-6.7.el6_10
    fixed: vendor fix RHSA-2022:5053
  • Red Hat Enterprise Linux Server Optional (v. 7) log4j-manual 1.2.17-16.el7_4, log4j-javadoc 1.2.17-16.el7_4 Red Hat Enterprise Linux Workstation (v. 7) log4j 1.2.17-16.el7_4 Red Hat Enterprise Linux Workstation Optional (v. 7) log4j-manual 1.2.17-16.el7_4, log4j-javadoc 1.2.17-16.el7_4
    fixed: vendor fix RHSA-2017:2423
  • Red Hat Fuse 7.3.1
    fixed: vendor fix RHSA-2019:1545
show 14 more
  • Red Hat JBoss BPMS 6.4
    fixed: vendor fix RHSA-2017:2889
  • Red Hat JBoss BRMS 6.4
    fixed: vendor fix RHSA-2017:2888
  • Red Hat JBoss Data Grid 7.1
    fixed: vendor fix RHSA-2017:3244
  • Red Hat JBoss Data Virtualization 6.4.8.SP1
    fixed: vendor fix RHSA-2022:0497
  • Red Hat JBoss Data Virtualization 6.4.8.SP2
    fixed: vendor fix RHSA-2022:0507
  • Red Hat JBoss EAP 7.0
    fixed: vendor fix RHSA-2017:2810
  • Red Hat JBoss Enterprise Application Platform 5 for RHEL 5 Server log4j 1.2.14-19.patch_01.ep5.el5 Red Hat JBoss Enterprise Application Platform 5 for RHEL 6 Server log4j 1.2.14-19.patch_01.ep5.el6
    fixed: vendor fix RHSA-2017:3399
  • Red Hat JBoss Enterprise Application Platform 5.2 security update
    fixed: vendor fix RHSA-2017:3400
  • Red Hat JBoss Enterprise Application Platform 6.4
    fixed: vendor fix RHSA-2017:2633
  • Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 6 Server jboss-ec2-eap 7.5.17-1.Final_redhat_4.ep6.el6, jboss-ec2-eap-samples 7.5.17-1.Final_redhat_4.ep6.el6
    fixed: vendor fix RHSA-2017:2638
  • Red Hat JBoss Enterprise Application Platform 7.0 for RHEL 6 Server eap7-jboss-ec2-eap 7.0.8-1.GA_redhat_1.ep7.el6, eap7-jboss-ec2-eap-samples 7.0.8-1.GA_redhat_1.ep7.el6 Red Hat JBoss Enterprise Application Platform 7.0 for RHEL 7 Server eap7-jboss-ec2-eap 7.0.8-1.GA_redhat_1.ep7.el7, eap7-jboss-ec2-eap-samples 7.0.8-1.GA_redhat_1.ep7.el7
    fixed: vendor fix RHSA-2017:2811
  • Red Hat JBoss Web Server 3.1
    fixed: vendor fix RHSA-2017:1802
  • Red Hat JBoss Web Server 3.1 for RHEL 6 tomcat7 7.0.70-22.ep7.el6, tomcat8 8.0.36-24.ep7.el6, tomcat7-lib 7.0.70-22.ep7.el6, tomcat8-lib 8.0.36-24.ep7.el6, tomcat7-jsvc 7.0.70-22.ep7.el6, tomcat8-jsvc 8.0.36-24.ep7.el6, +20 more Red Hat JBoss Web Server 3.1 for RHEL 7 tomcat7 7.0.70-22.ep7.el7, tomcat8 8.0.36-24.ep7.el7, tomcat7-lib 7.0.70-22.ep7.el7, tomcat8-lib 8.0.36-24.ep7.el7, tomcat7-jsvc 7.0.70-22.ep7.el7, tomcat8-jsvc 8.0.36-24.ep7.el7, +20 more
    fixed: vendor fix RHSA-2017:1801
  • Red Hat AMQ Broker 7 log4j Red Hat BPM Suite 6 log4j Red Hat Enterprise Linux 8 log4j12, log4j12-javadoc Red Hat Fuse 7 log4j, log4j-core Red Hat Integration Data Virtualisation Operator log4j Red Hat JBoss Data Virtualization 6 log4j
    +4 more products
    Red Hat JBoss Enterprise Application Platform 5 log4j-core Red Hat JBoss Enterprise Application Platform 6 log4j-core Red Hat JBoss Enterprise Application Platform 7 log4j-core Red Hat JBoss Fuse 6 log4j
    not affected: vulnerable code not present

9 more not affected in the full advisory

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
yes
Technical impact
total
Assessed
5mo ago

Exploit prediction

69.98% chance of exploitation in the next 30 days, higher than 99.3% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P
GitHub 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
maven log4j:log4j
>=1.2, <=1.2.17
 no fix listed
maven org.zenframework.z8.dependencies.commons:log4j-1.2.17
1 listed version
 no fix listed

Affected products

  • Apache Software Foundation Log4j

Classification

Weakness
  • CWE-502 Deserialization of Untrusted Data
Technology feeds

References

Sources

Fencer Intel 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.