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    CVE-2019-17571

    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.

    Published:Dec 20, 2019
    Last Modified:May 28, 2026
    EPS:Dec 20, 2019
    EPSS Score:0.33799
    CVSS Score:9.8

    Affected Products

    Vendor
    Apache
    Product
    Bookkeeper
    Vendor
    Apache
    Product
    Log4j
    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Netapp
    Product
    Oncommand System Manager
    Vendor
    Netapp
    Product
    Oncommand Workflow Automation
    Vendor
    Opensuse
    Product
    Leap
    Vendor
    Oracle
    Product
    Application Testing Suite
    Vendor
    Oracle
    Product
    Communications Network Integrity
    Vendor
    Oracle
    Product
    Endeca Information Discovery Studio
    Vendor
    Oracle
    Product
    Financial Services Lending And Leasing
    Vendor
    Oracle
    Product
    Mysql Enterprise Monitor
    Vendor
    Oracle
    Product
    Primavera Gateway
    Vendor
    Oracle
    Product
    Rapid Planning
    Vendor
    Oracle
    Product
    Retail Extract Transform And Load
    Vendor
    Oracle
    Product
    Retail Service Backbone
    Vendor
    Oracle
    Product
    Weblogic Server
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Jboss Bpms
    Vendor
    Redhat
    Product
    Jboss Data Grid
    Vendor
    Redhat
    Product
    Jboss Data Virtualization
    Vendor
    Redhat
    Product
    Jboss Enterprise Application Platform
    Vendor
    Redhat
    Product
    Jboss Enterprise Brms Platform
    Vendor
    Redhat
    Product
    Jboss Enterprise Web Server
    Vendor
    Redhat
    Product
    Jboss Fuse
    Vendor
    Redhat
    Product
    Rhel Els

    Exploits

    https://github.com/Al1ex/CVE-2019-17571https://github.com/HynekPetrak/log4shell-finderhttps://github.com/shadow-horse/CVE-2019-17571

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-586 Object Injection

    Related CVEs

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    CVE-2019-19906 (CVSS 7.5) — cyrus-sasl (aka Cyrus SASL) 2.1.27 has an out-of-bounds write leading to unauthenticated remote denial-of-serv…
    CVE-2017-6891 (CVSS 8.8) — Two errors in the "asn1_find_node()" function (lib/parser_aux.c) within GnuTLS libtasn1 version 4.10 can be ex…

    References

    http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00022.html
    https://lists.apache.org/thread.html/277b4b5c2b0e06a825ccec565fa65bd671f35a4d58e3e2ec5d0618e1%40%3Cdev.tika.apache.org%3E
    https://lists.apache.org/thread.html/44491fb9cc19acc901f7cff34acb7376619f15638439416e3e14761c%40%3Cdev.tika.apache.org%3E
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    https://lists.apache.org/thread.html/6114ce566200d76e3cc45c521a62c2c5a4eac15738248f58a99f622c%40%3Cissues.activemq.apache.org%3E
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    https://lists.apache.org/thread.html/eea03d504b36e8f870e8321d908e1def1addda16adda04327fe7c125%40%3Cdev.logging.apache.org%3E
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    https://lists.debian.org/debian-lts-announce/2020/01/msg00008.html
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    https://lists.debian.org/debian-lts-announce/2020/01/msg00008.html
    https://security.netapp.com/advisory/ntap-20200110-0001/
    https://usn.ubuntu.com/4495-1/
    https://www.debian.org/security/2020/dsa-4686
    https://www.oracle.com/security-alerts/cpuApr2021.html
    https://www.oracle.com/security-alerts/cpuapr2020.html
    https://www.oracle.com/security-alerts/cpuapr2022.html
    https://www.oracle.com/security-alerts/cpujul2020.html
    https://www.oracle.com/security-alerts/cpujul2022.html

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High