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CVE Vulnerabilities

CVE-2021-3537

NULL Pointer Dereference

Published: May 14, 2021 | Modified: Nov 21, 2024
CVSS 3.x
5.9
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
4.3 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
7.5 MODERATE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2021-3537
CWEhttps://cwe.mitre.org/data/definitions/476.html

A vulnerability found in libxml2 in versions before 2.9.11 shows that it did not propagate errors while parsing XML mixed content, causing a NULL dereference. If an untrusted XML document was parsed in recovery mode and post-validated, the flaw could be used to crash the application. The highest threat from this vulnerability is to system availability.

Weakness

The product dereferences a pointer that it expects to be valid but is NULL.

Affected Software

NameVendorStart VersionEnd Version
Libxml2Xmlsoft*2.9.11 (excluding)
JBoss Core Services for RHEL 8RedHatjbcs-httpd24-apr-util-0:1.6.1-91.el8jbcs*
JBoss Core Services for RHEL 8RedHatjbcs-httpd24-curl-0:7.78.0-3.el8jbcs*
JBoss Core Services for RHEL 8RedHatjbcs-httpd24-httpd-0:2.4.37-80.el8jbcs*
JBoss Core Services for RHEL 8RedHatjbcs-httpd24-mod_cluster-native-0:1.3.16-10.Final_redhat_2.el8jbcs*
JBoss Core Services for RHEL 8RedHatjbcs-httpd24-mod_http2-0:1.15.7-22.el8jbcs*
JBoss Core Services for RHEL 8RedHatjbcs-httpd24-mod_jk-0:1.2.48-29.redhat_1.el8jbcs*
JBoss Core Services for RHEL 8RedHatjbcs-httpd24-mod_md-1:2.0.8-41.el8jbcs*
JBoss Core Services for RHEL 8RedHatjbcs-httpd24-mod_security-0:2.9.2-68.GA.el8jbcs*
JBoss Core Services for RHEL 8RedHatjbcs-httpd24-nghttp2-0:1.39.2-41.el8jbcs*
JBoss Core Services for RHEL 8RedHatjbcs-httpd24-openssl-1:1.1.1g-11.el8jbcs*
JBoss Core Services for RHEL 8RedHatjbcs-httpd24-openssl-chil-0:1.0.0-11.el8jbcs*
JBoss Core Services for RHEL 8RedHatjbcs-httpd24-openssl-pkcs11-0:0.4.10-26.el8jbcs*
JBoss Core Services on RHEL 7RedHatjbcs-httpd24-apr-util-0:1.6.1-91.jbcs.el7*
JBoss Core Services on RHEL 7RedHatjbcs-httpd24-curl-0:7.78.0-3.jbcs.el7*
JBoss Core Services on RHEL 7RedHatjbcs-httpd24-httpd-0:2.4.37-80.jbcs.el7*
JBoss Core Services on RHEL 7RedHatjbcs-httpd24-mod_cluster-native-0:1.3.16-10.Final_redhat_2.jbcs.el7*
JBoss Core Services on RHEL 7RedHatjbcs-httpd24-mod_http2-0:1.15.7-22.jbcs.el7*
JBoss Core Services on RHEL 7RedHatjbcs-httpd24-mod_jk-0:1.2.48-29.redhat_1.jbcs.el7*
JBoss Core Services on RHEL 7RedHatjbcs-httpd24-mod_md-1:2.0.8-41.jbcs.el7*
JBoss Core Services on RHEL 7RedHatjbcs-httpd24-mod_security-0:2.9.2-68.GA.jbcs.el7*
JBoss Core Services on RHEL 7RedHatjbcs-httpd24-nghttp2-0:1.39.2-41.jbcs.el7*
JBoss Core Services on RHEL 7RedHatjbcs-httpd24-openssl-1:1.1.1g-11.jbcs.el7*
JBoss Core Services on RHEL 7RedHatjbcs-httpd24-openssl-chil-0:1.0.0-11.jbcs.el7*
JBoss Core Services on RHEL 7RedHatjbcs-httpd24-openssl-pkcs11-0:0.4.10-26.jbcs.el7*
Red Hat Enterprise Linux 8RedHatlibxml2-0:2.9.7-9.el8_4.2*
Red Hat Enterprise Linux 8RedHatlibxml2-0:2.9.7-9.el8_4.2*
Red Hat Migration Toolkit for Containers 1.4RedHatrhmtc/openshift-migration-controller-rhel8:v1.4.6-4*
Red Hat Migration Toolkit for Containers 1.4RedHatrhmtc/openshift-migration-log-reader-rhel8:v1.4.6-4*
Red Hat Migration Toolkit for Containers 1.4RedHatrhmtc/openshift-migration-must-gather-rhel8:v1.4.6-4*
Red Hat Migration Toolkit for Containers 1.4RedHatrhmtc/openshift-migration-operator-bundle:v1.4.6-5*
Red Hat Migration Toolkit for Containers 1.4RedHatrhmtc/openshift-migration-registry-rhel8:v1.4.6-4*
Red Hat Migration Toolkit for Containers 1.4RedHatrhmtc/openshift-migration-rsync-transfer-rhel8:v1.4.6-4*
Red Hat Migration Toolkit for Containers 1.4RedHatrhmtc/openshift-migration-ui-rhel8:v1.4.6-4*
Red Hat Migration Toolkit for Containers 1.4RedHatrhmtc/openshift-migration-velero-plugin-for-aws-rhel8:v1.4.6-4*
Red Hat Migration Toolkit for Containers 1.4RedHatrhmtc/openshift-migration-velero-plugin-for-gcp-rhel8:v1.4.6-3*
Red Hat Migration Toolkit for Containers 1.4RedHatrhmtc/openshift-migration-velero-plugin-for-microsoft-azure-rhel8:v1.4.6-4*
Red Hat Migration Toolkit for Containers 1.4RedHatrhmtc/openshift-migration-velero-restic-restore-helper-rhel8:v1.4.6-5*
Red Hat Migration Toolkit for Containers 1.4RedHatrhmtc/openshift-migration-velero-rhel8:v1.4.6-5*
Red Hat Migration Toolkit for Containers 1.4RedHatrhmtc/openshift-velero-plugin-rhel8:v1.4.6-4*
Text-Only JBCSRedHatlibxml2*
Libxml2Ubuntubionic*
Libxml2Ubuntuesm-infra-legacy/trusty*
Libxml2Ubuntuesm-infra/bionic*
Libxml2Ubuntuesm-infra/focal*
Libxml2Ubuntuesm-infra/xenial*
Libxml2Ubuntufocal*
Libxml2Ubuntugroovy*
Libxml2Ubuntuhirsute*
Libxml2Ubuntuprecise/esm*
Libxml2Ubuntutrusty*
Libxml2Ubuntutrusty/esm*
Libxml2Ubuntuupstream*
Libxml2Ubuntuxenial*

Potential Mitigations

References

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