5.9
MEDIUM
CVE-2021-3537
Linux XML Parser NULL Dereference Vulnerability
Description

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.

INFO

Published Date :

May 14, 2021, 8:15 p.m.

Last Modified :

Nov. 7, 2023, 3:38 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

2.2
Affected Products

The following products are affected by CVE-2021-3537 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Netapp active_iq_unified_manager
2 Netapp ontap_select_deploy_administration_utility
3 Netapp clustered_data_ontap
4 Netapp clustered_data_ontap_antivirus_connector
5 Netapp snapdrive
6 Netapp manageability_software_development_kit
7 Netapp hci_h410c_firmware
1 Oracle peoplesoft_enterprise_peopletools
2 Oracle enterprise_manager_ops_center
3 Oracle real_user_experience_insight
4 Oracle mysql_workbench
5 Oracle enterprise_manager_base_platform
6 Oracle communications_cloud_native_core_network_function_cloud_native_environment
7 Oracle openjdk
1 Redhat enterprise_linux
2 Redhat jboss_core_services
1 Fedoraproject fedora
1 Debian debian_linux
1 Xmlsoft libxml2
1 Nokogiri nokogiri

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-3537 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-3537 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QVM4UJ3376I6ZVOYMHBNX4GY3NIV52WV/ [No types assigned]
    Added Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BZOMV5J4PMZAORVT64BKLV6YIZAFDGX6/ [No types assigned]
    Removed Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/QVM4UJ3376I6ZVOYMHBNX4GY3NIV52WV/
    Removed Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/BZOMV5J4PMZAORVT64BKLV6YIZAFDGX6/
  • Modified Analysis by [email protected]

    Feb. 28, 2023

    Action Type Old Value New Value
    Changed Reference Type https://www.oracle.com/security-alerts/cpujul2022.html No Types Assigned https://www.oracle.com/security-alerts/cpujul2022.html Not Applicable
  • CVE Modified by [email protected]

    Jul. 25, 2022

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/security-alerts/cpujul2022.html [No Types Assigned]
  • Modified Analysis by [email protected]

    May. 31, 2022

    Action Type Old Value New Value
    Changed Reference Type https://www.oracle.com/security-alerts/cpuapr2022.html No Types Assigned https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory
    Changed CPE Configuration OR *cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:mysql_workbench:*:*:*:*:*:*:*:* versions up to (including) 8.0.26 *cpe:2.3:a:oracle:openjdk:8:update301:*:*:*:*:*:* *cpe:2.3:a:oracle:real_user_experience_insight:13.4.1.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:real_user_experience_insight:13.5.1.0:*:*:*:*:*:*:* OR *cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:1.10.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:enterprise_manager_base_platform:13.4.0.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:enterprise_manager_base_platform:13.5.0.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:mysql_workbench:*:*:*:*:*:*:*:* versions up to (including) 8.0.26 *cpe:2.3:a:oracle:openjdk:8:update301:*:*:*:*:*:* *cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.58:*:*:*:*:*:*:* *cpe:2.3:a:oracle:real_user_experience_insight:13.4.1.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:real_user_experience_insight:13.5.1.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Apr. 20, 2022

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/security-alerts/cpuapr2022.html [No Types Assigned]
  • Modified Analysis by [email protected]

    Dec. 08, 2021

    Action Type Old Value New Value
    Changed Reference Type https://www.oracle.com/security-alerts/cpuoct2021.html No Types Assigned https://www.oracle.com/security-alerts/cpuoct2021.html Patch, Third Party Advisory
    Added CWE NIST CWE-476
    Added CPE Configuration OR *cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:mysql_workbench:*:*:*:*:*:*:*:* versions up to (including) 8.0.26 *cpe:2.3:a:oracle:openjdk:8:update301:*:*:*:*:*:* *cpe:2.3:a:oracle:real_user_experience_insight:13.4.1.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:real_user_experience_insight:13.5.1.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Oct. 20, 2021

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/security-alerts/cpuoct2021.html [No Types Assigned]
  • Modified Analysis by [email protected]

    Sep. 13, 2021

    Action Type Old Value New Value
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/BZOMV5J4PMZAORVT64BKLV6YIZAFDGX6/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/BZOMV5J4PMZAORVT64BKLV6YIZAFDGX6/ Mailing List, Third Party Advisory
    Changed Reference Type https://security.gentoo.org/glsa/202107-05 No Types Assigned https://security.gentoo.org/glsa/202107-05 Third Party Advisory
    Changed Reference Type https://security.netapp.com/advisory/ntap-20210625-0002/ No Types Assigned https://security.netapp.com/advisory/ntap-20210625-0002/ Third Party Advisory
    Changed CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* OR *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* *cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:clustered_data_ontap_antivirus_connector:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:manageability_software_development_kit:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:snapdrive:-:*:*:*:*:windows:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:hci_h410c_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:hci_h410c:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Jul. 06, 2021

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/202107-05 [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 25, 2021

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20210625-0002/ [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 14, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/BZOMV5J4PMZAORVT64BKLV6YIZAFDGX6/ [No Types Assigned]
  • Initial Analysis by [email protected]

    May. 19, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:N/A:P)
    Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1956522 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1956522 Issue Tracking, Patch, Third Party Advisory
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/05/msg00008.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/05/msg00008.html Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/QVM4UJ3376I6ZVOYMHBNX4GY3NIV52WV/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/QVM4UJ3376I6ZVOYMHBNX4GY3NIV52WV/ Mailing List, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:* versions up to (excluding) 2.9.11
    Added CPE Configuration OR *cpe:2.3:a:redhat:jboss_core_services:-:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-3537 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-3537 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

1.40 }} 0.38%

score

0.86480

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability