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

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
IBM Security Verify Access OIDC Provider<=10.0.0
libxml2-devel<2.9.11
Red Hat JBoss Core Services
Red Hat Enterprise Linux=8.0
Red Hat Fedora=33
Red Hat Fedora=34
Debian Linux=9.0
NetApp Active IQ Unified Manager for VMware vSphere
NetApp Active IQ Unified Manager
IBM Data ONTAP
NetApp ONTAP Antivirus Connector
NetApp E-Series SANtricity OS Controller>=11.0.0<=11.70.1
NetApp SANtricity Storage Manager
NetApp E-Series SANtricity Web Services
NetApp SolidFire & HCI Management Node
NetApp Manageability SDK
NetApp OnCommand Insight
NetApp OnCommand Workflow Automation
NetApp ONTAP Select Deploy
NetApp E-Series SANtricity Unified Manager
NetApp SnapDrive for Windows
NetApp SnapManager for Oracle
NetApp SnapManager for SAP
NetApp SolidFire & HCI Storage Node
NetApp H410C
NetApp H410C
Oracle Communications Cloud Native Core Network Function Cloud Native Environment=1.10.0
Oracle Enterprise Manager=13.4.0.0
Oracle Enterprise Manager=13.5.0.0
MySQL Workbench<=8.0.26
OpenJDK 8=8-update301
Oracle PeopleTools=8.58
Oracle Real User Experience Insight=13.4.1.0
Oracle Real User Experience Insight=13.5.1.0
Oracle Storage Cloud Software Appliance=8.8

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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