high
8.6
CWE
787 119
Advisory Published
CVE Published
Advisory Published
Updated

CVE-2021-3517: Buffer Overflow

First published: Thu Apr 22 2021(Updated: )

A heap-based buffer overflow was found in libxml2 when processing truncated UTF-8 input. Reference: <a href="https://gitlab.gnome.org/GNOME/libxml2/-/issues/235">https://gitlab.gnome.org/GNOME/libxml2/-/issues/235</a> Upstream patch: <a href="https://gitlab.gnome.org/GNOME/libxml2/-/commit/bf22713507fe1fc3a2c4b525cf0a88c2dc87a3a2">https://gitlab.gnome.org/GNOME/libxml2/-/commit/bf22713507fe1fc3a2c4b525cf0a88c2dc87a3a2</a>

Credit: secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
rubygems/nokogiri<1.11.4
1.11.4
redhat/jbcs-httpd24-apr-util<0:1.6.1-91.el8
0:1.6.1-91.el8
redhat/jbcs-httpd24-curl<0:7.78.0-3.el8
0:7.78.0-3.el8
redhat/jbcs-httpd24-httpd<0:2.4.37-80.el8
0:2.4.37-80.el8
redhat/jbcs-httpd24-nghttp2<0:1.39.2-41.el8
0:1.39.2-41.el8
redhat/jbcs-httpd24-openssl<1:1.1.1g-11.el8
1:1.1.1g-11.el8
redhat/jbcs-httpd24-openssl-chil<0:1.0.0-11.el8
0:1.0.0-11.el8
redhat/jbcs-httpd24-openssl-pkcs11<0:0.4.10-26.el8
0:0.4.10-26.el8
redhat/jbcs-httpd24-apr-util<0:1.6.1-91.jbcs.el7
0:1.6.1-91.jbcs.el7
redhat/jbcs-httpd24-curl<0:7.78.0-3.jbcs.el7
0:7.78.0-3.jbcs.el7
redhat/jbcs-httpd24-httpd<0:2.4.37-80.jbcs.el7
0:2.4.37-80.jbcs.el7
redhat/jbcs-httpd24-nghttp2<0:1.39.2-41.jbcs.el7
0:1.39.2-41.jbcs.el7
redhat/jbcs-httpd24-openssl<1:1.1.1g-11.jbcs.el7
1:1.1.1g-11.jbcs.el7
redhat/jbcs-httpd24-openssl-chil<0:1.0.0-11.jbcs.el7
0:1.0.0-11.jbcs.el7
redhat/jbcs-httpd24-openssl-pkcs11<0:0.4.10-26.jbcs.el7
0:0.4.10-26.jbcs.el7
redhat/libxml2<0:2.9.7-9.el8_4.2
0:2.9.7-9.el8_4.2
redhat/libxml2<2.9.11
2.9.11
Xmlsoft Libxml2<2.9.11
Redhat Jboss Core Services
Redhat Enterprise Linux=8.0
Fedoraproject Fedora=33
Fedoraproject Fedora=34
Debian Debian Linux=9.0
Netapp Active Iq Unified Manager Vmware Vsphere
Netapp Active Iq Unified Manager Windows
NetApp Clustered Data ONTAP
Netapp Clustered Data Ontap Antivirus Connector
NetApp E-Series SANtricity OS Controller>=11.0.0<=11.70.1
Netapp E-series Santricity Storage Manager
Netapp E-series Santricity Web Services Web Services Proxy
Netapp Hci Management Node
Netapp Manageability Software Development Kit
NetApp OnCommand Insight
NetApp OnCommand Workflow Automation
NetApp ONTAP Select Deploy administration utility
Netapp Santricity Unified Manager
Netapp Snapdrive Windows
Netapp Snapmanager Oracle
Netapp Snapmanager Sap
Netapp Solidfire
Netapp Hci H410c Firmware
Netapp Hci H410c
Oracle Communications Cloud Native Core Network Function Cloud Native Environment=1.10.0
Oracle Enterprise Manager Base Platform=13.4.0.0
Oracle Enterprise Manager Base Platform=13.5.0.0
Oracle Mysql Workbench<=8.0.26
Oracle OpenJDK=8-update301
Oracle PeopleSoft Enterprise PeopleTools=8.58
Oracle Real User Experience Insight=13.4.1.0
Oracle Real User Experience Insight=13.5.1.0
Oracle ZFS Storage Appliance Kit=8.8
IBM Cloud Pak for Security (CP4S)<=1.7.2.0
IBM Cloud Pak for Security (CP4S)<=1.7.1.0
IBM Cloud Pak for Security (CP4S)<=1.7.0.0

Remedy

https://bugzilla.redhat.com/show_bug.cgi?id=1954232

Remedy

https://www.oracle.com/security-alerts/cpuapr2022.html

Remedy

https://www.oracle.com/security-alerts/cpujan2022.html

Remedy

https://www.oracle.com/security-alerts/cpuoct2021.html

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the vulnerability ID?

    The vulnerability ID is CVE-2021-3517.

  • What is the severity of CVE-2021-3517?

    The severity of CVE-2021-3517 is high with a CVSS score of 8.6.

  • What is the affected software?

    The affected software includes libxml2 versions before 2.9.11, Nokogiri version up to 1.11.4, and certain Red Hat packages.

  • How does the vulnerability occur?

    The vulnerability occurs due to a heap-based buffer overflow caused by improper bounds checking in the xml entity encoding functionality of libxml2.

  • Is there a fix available for CVE-2021-3517?

    Yes, a fix is available. Update to libxml2 version 2.9.11 or higher, or follow the recommended remediation for the affected software packages.

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