CVE-2021-46143: Integer Overflow
First published: Thu Jan 06 2022(Updated: )
expat (libexpat) is susceptible to a software flaw that causes process interruption. When processing a large number of prefixed XML attributes on a single tag can libexpat can terminate unexpectedly due to integer overflow. The highest threat from this vulnerability is to availability, confidentiality and integrity.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/expat | <0:2.1.0-14.el7_9 | 0:2.1.0-14.el7_9 |
| redhat/expat | <0:2.2.5-4.el8_5.3 | 0:2.2.5-4.el8_5.3 |
| redhat/xmlrpc-c | <0:1.51.0-8.el8 | 0:1.51.0-8.el8 |
| redhat/expat | <2.4.3 | 2.4.3 |
| Libexpat Project Libexpat | <2.4.3 | |
| Netapp Active Iq Unified Manager Vmware Vsphere | ||
| NetApp Clustered Data ONTAP | ||
| Netapp Hci Baseboard Management Controller | =h610c | |
| Netapp Hci Baseboard Management Controller | =h610s | |
| Netapp Hci Baseboard Management Controller | =h615c | |
| NetApp OnCommand Workflow Automation | ||
| Netapp Solidfire \& Hci Management Node | ||
| Tenable Nessus | <8.15.3 | |
| Tenable Nessus | >=10.0.0<10.1.1 | |
| Siemens SINEMA Remote Connect Server | <3.1 | |
| debian/expat | 2.2.10-2+deb11u5 2.2.10-2+deb11u6 2.5.0-1+deb12u1 2.6.4-1 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2021-46143 https://nvd.nist.gov/vuln/detail/CVE-2021-46143 https://github.com/libexpat/libexpat/issues/532
- https://bugzilla.redhat.com/show_bug.cgi?id=2044455
- https://access.redhat.com/errata/RHSA-2022:1069
- https://access.redhat.com/errata/RHSA-2022:0951
- https://access.redhat.com/errata/RHSA-2022:7692
- https://access.redhat.com/errata/RHSA-2022:7144
- https://access.redhat.com/security/cve/cve-2021-46143
- https://github.com/libexpat/libexpat/issues/532
- https://github.com/libexpat/libexpat/pull/538
- http://www.openwall.com/lists/oss-security/2022/01/17/3
- https://security.netapp.com/advisory/ntap-20220121-0006/
- https://www.tenable.com/security/tns-2022-05
- https://www.debian.org/security/2022/dsa-5073
- https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf
- https://security.gentoo.org/glsa/202209-24
- https://launchpad.net/bugs/cve/CVE-2021-46143
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2044456
- https://access.redhat.com/errata/RHSA-2022:7143
- https://github.com/libexpat/libexpat/commit/85ae9a2d7d0e9358f356b33977b842df8ebaec2b
- https://security-tracker.debian.org/tracker/CVE-2021-46143
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-46143
- https://nvd.nist.gov/vuln/detail/CVE-2021-46143
- https://ubuntu.com/security/CVE-2021-46143
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is the vulnerability ID of this vulnerability?
The vulnerability ID is CVE-2021-46143.
What is the severity level of CVE-2021-46143?
The severity level of CVE-2021-46143 is high with a CVSS score of 7.8.
What is the impact of CVE-2021-46143?
The highest threat from CVE-2021-46143 is to availability and confidentiality.
Which software versions are affected by CVE-2021-46143?
The affected software versions include Expat (libexpat) before 2.4.3.
How can I fix CVE-2021-46143?
To fix CVE-2021-46143, update Expat to version 2.4.3.
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