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Fencer Intel
critical 9.8

CVE-2017-5645 in the critical feed json

Deserialization of Untrusted Data in Log4j

published 2017-04-17 9 y ago modified 2026-10-08 31 d ago also GHSA-fxph-q3j8-mv87 , EUVD-2020-0263

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
89.4%
EPSS 89.4% chance of exploitation in 30 days, percentile 99.7%
public exploits
0
none known, plus a Nuclei check

Summary

In Apache Log4j 2.x before 2.8.2, when using the TCP socket server or UDP socket server to receive serialized log events from another application, a specially crafted binary payload can be sent that, when deserialized, can execute arbitrary code.

Patch / fix

  • maven org.apache.logging.log4j:log4j 2.8.2
  • maven org.apache.logging.log4j:log4j-core 2.8.2
  • apache log4j 2.8.2
  • oracle communications_messaging_server 8.0.2
  • oracle communications_webrtc_session_controller 7.2
  • apache-log4j2 Debian 14, Debian 13, Debian 12 2.7-2

debian advisories DEBIAN-CVE-2017-5645

  • 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
  • eap7-jasypt jboss enterprise application platform 7 1.9.2-2.redhat_1.1.ep7.el7
  • eap7-wildfly jboss enterprise application platform 7 7.0.8-4.GA_redhat_1.1.ep7.el7
  • eap7-undertow jboss enterprise application platform 7 1.3.31-1.Final_redhat_1.1.ep7.el7
  • eap7-bouncycastle jboss enterprise application platform 7 1.56.0-3.redhat_2.2.ep7.el7

red hat advisories RHSA-2017:2811RHSA-2017:2808RHSA-2017:2809RHSA-2017:3399RHSA-2017:2638RHSA-2017:2636

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-2017-5645 updated cvss 8.1

log4j: Socket receiver deserialization vulnerability

  • Red Hat AMQ Broker 7 hawtio-osgi hawtio-osgi
    affected: no fix available
  • Red Hat Enterprise Linux 5 log4j Red Hat Enterprise Linux 6 log4j, log4j-manual, log4j-javadoc Red Hat Enterprise Virtualization 3 jasperreports-server-pro
    affected: no fix planned “Will not fix”
  • Red Hat JBoss A-MQ 6 log4j
    affected: no fix available
  • Red Hat JBoss BRMS 5 log4j
    affected: no fix planned “Will not fix”
  • Red Hat JBoss Data Grid 7 log4j-core
    affected: no fix available
  • Red Hat JBoss Enterprise Web Server 2 log4j
    affected: no fix planned “Will not fix”
  • Red Hat JBoss Fuse 6 log4j
    affected: no fix available
  • Red Hat JBoss Fuse Service Works 6 log4j Red Hat JBoss SOA Platform 5 log4j
    affected: no fix planned “Will not fix”
show 18 more
  • 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 Red Hat Enterprise Linux Server (v. 7) log4j 1.2.17-16.el7_4 Red Hat Enterprise Linux Server Optional (v. 7) log4j-manual 1.2.17-16.el7_4, log4j-javadoc 1.2.17-16.el7_4
    +2 more products
    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
  • Red Hat Fuse 7.9
    fixed: vendor fix RHSA-2021:3140
  • 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 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 5 Server log4j-eap6 1.2.16-12.redhat_3.1.ep6.el5, hornetq 2.3.25-22.SP20_redhat_1.1.ep6.el5, apache-cxf 2.7.18-7.SP6_redhat_1.1.ep6.el5, jbossweb 7.5.24-1.Final_redhat_1.1.ep6.el5, codehaus-jackson 1.9.9-11.redhat_5.1.ep6.el5, infinispan 5.2.22-1.Final_redhat_1.1.ep6.el5, +89 more
    fixed: vendor fix RHSA-2017:2637
  • Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 6 Server log4j-eap6 1.2.16-12.redhat_3.1.ep6.el6, hornetq 2.3.25-22.SP20_redhat_1.1.ep6.el6, apache-cxf 2.7.18-7.SP6_redhat_1.1.ep6.el6, jbossweb 7.5.24-1.Final_redhat_1.1.ep6.el6, codehaus-jackson 1.9.9-11.redhat_5.1.ep6.el6, infinispan 5.2.22-1.Final_redhat_1.1.ep6.el6, +91 more
    fixed: vendor fix RHSA-2017:2635
  • Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 7 Server log4j-eap6 1.2.16-12.redhat_3.1.ep6.el7, hornetq 2.3.25-22.SP20_redhat_1.1.ep6.el7, apache-cxf 2.7.18-7.SP6_redhat_1.1.ep6.el7, jbossweb 7.5.24-1.Final_redhat_1.1.ep6.el7, codehaus-jackson 1.9.9-11.redhat_5.1.ep6.el7, infinispan 5.2.22-1.Final_redhat_1.1.ep6.el7, +89 more
    fixed: vendor fix RHSA-2017:2636
  • Red Hat JBoss Enterprise Application Platform 7.0 for RHEL 6 Server eap7-jasypt 1.9.2-2.redhat_1.1.ep7.el6, eap7-wildfly 7.0.8-4.GA_redhat_1.1.ep7.el6, eap7-artemis-native 1.1.0-13.redhat_4.ep7.el6, eap7-bouncycastle 1.56.0-3.redhat_2.2.ep7.el6, eap7-jboss-ec2-eap 7.0.8-1.GA_redhat_1.ep7.el6, eap7-undertow 1.3.31-1.Final_redhat_1.1.ep7.el6, +30 more
    fixed: vendor fix RHSA-2017:2809
  • Red Hat JBoss Enterprise Application Platform 7.0 for RHEL 7 Server eap7-jasypt 1.9.2-2.redhat_1.1.ep7.el7, eap7-wildfly 7.0.8-4.GA_redhat_1.1.ep7.el7, eap7-artemis-native 1.1.0-13.redhat_4.ep7.el7, eap7-bouncycastle 1.56.0-3.redhat_2.2.ep7.el7, eap7-jboss-ec2-eap 7.0.8-1.GA_redhat_1.ep7.el7, eap7-undertow 1.3.31-1.Final_redhat_1.1.ep7.el7, +30 more
    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 Software Collections for Red Hat Enterprise Linux Server (v. 6) rh-java-common-log4j 1.2.17-15.15.el6, rh-java-common-log4j-manual 1.2.17-15.15.el6, rh-java-common-log4j-javadoc 1.2.17-15.15.el6 Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-java-common-log4j 1.2.17-15.15.el7, rh-java-common-log4j-manual 1.2.17-15.15.el7, rh-java-common-log4j-javadoc 1.2.17-15.15.el7 Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7) rh-java-common-log4j 1.2.17-15.15.el6, rh-java-common-log4j-manual 1.2.17-15.15.el6, rh-java-common-log4j-javadoc 1.2.17-15.15.el6
    fixed: vendor fix RHSA-2017:1417

3 more fixed, 7 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
31 d ago

Exploit prediction

89.36% chance of exploitation in the next 30 days, higher than 99.7% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • Nuclei template Apache Log4j Server - Deserialization Command Execution nuclei detection template

CVSS scores

assigned by version score vector
NVD 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 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
maven org.apache.logging.log4j:log4j
>=2.0, <2.8.2
2.8.2
maven org.apache.logging.log4j:log4j-core
>=2.0, <2.8.2
2.8.2

Affected products

  • Apache Software Foundation Apache 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.