CVE-2021-3541
First published: Fri Apr 16 2021(Updated: )
A flaw was found in libxml2. Exponential entity expansion attack its possible bypassing all existing protection mechanisms and leading to denial of service.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| 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 | ||
| Oracle ZFS Storage Appliance Kit | =8.8 | |
| Netapp Active Iq Unified Manager Vmware Vsphere | ||
| Netapp Cloud Backup | ||
| NetApp Clustered Data ONTAP | ||
| Netapp Clustered Data Ontap Antivirus Connector | ||
| Netapp Manageability Software Development Kit | ||
| NetApp ONTAP Select Deploy administration utility | ||
| Netapp Smi-s Provider | ||
| Netapp Snapdrive Unix | ||
| Netapp H410c Firmware | ||
| Netapp H410c | ||
| Netapp H300s Firmware | ||
| Netapp H300s | ||
| Netapp H500s Firmware | ||
| Netapp H500s | ||
| Netapp H700s Firmware | ||
| Netapp H700s | ||
| Netapp H300e Firmware | ||
| Netapp H300e | ||
| Netapp H500e Firmware | ||
| Netapp H500e | ||
| Netapp H700e Firmware | ||
| Netapp H700e | ||
| Netapp H410s Firmware | ||
| Netapp H410s | ||
| 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 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2021-3541 https://nvd.nist.gov/vuln/detail/CVE-2021-3541
- https://bugzilla.redhat.com/show_bug.cgi?id=1950515
- https://access.redhat.com/errata/RHSA-2022:1389
- https://access.redhat.com/errata/RHSA-2021:2569
- https://access.redhat.com/errata/RHSA-2022:1390
- https://access.redhat.com/errata/RHBA-2021:2854
- https://access.redhat.com/security/cve/cve-2021-3541
- https://access.redhat.com/security/cve/CVE-2003-1564
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1960153
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1960154
- https://gitlab.gnome.org/GNOME/libxml2/-/commit/8598060bacada41a0eb09d95c97744ff4e428f8e
- https://gitlab.gnome.org/GNOME/libxml2/-/issues/228
- https://security.netapp.com/advisory/ntap-20210805-0007/
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/204818
- https://www.ibm.com/support/pages/node/6493729
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is CVE-2021-3541?
CVE-2021-3541 is a vulnerability found in libxml2 that allows for an exponential entity expansion attack, bypassing existing protection mechanisms and leading to denial of service.
What is the severity of CVE-2021-3541?
CVE-2021-3541 has a severity rating of 6.5, which is considered medium.
Which software is affected by CVE-2021-3541?
Software affected by CVE-2021-3541 includes jbcs-httpd24-apr-util, jbcs-httpd24-curl, jbcs-httpd24-httpd, jbcs-httpd24-nghttp2, jbcs-httpd24-openssl, jbcs-httpd24-openssl-chil, jbcs-httpd24-openssl-pkcs11, and libxml2.
How can I fix CVE-2021-3541?
To fix CVE-2021-3541, update your software to the recommended versions provided by the respective vendors.
Where can I find more information about CVE-2021-3541?
You can find more information about CVE-2021-3541 on the Red Hat Security Advisory and Bugzilla pages.
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