NULL Pointer Dereference Affecting libxml2 package, versions <2.9.4+dfsg1-6.1ubuntu1.4
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Test your applications- Snyk ID SNYK-UBUNTU1804-LIBXML2-1290395
- published 4 Jun 2021
- disclosed 14 May 2021
Introduced: 14 May 2021
CVE-2021-3537 Open this link in a new tabHow to fix?
Upgrade Ubuntu:18.04 libxml2 to version 2.9.4+dfsg1-6.1ubuntu1.4 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libxml2 package and not the libxml2 package as distributed by Ubuntu.
See How to fix? for Ubuntu:18.04 relevant fixed versions and status.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2021-3537
- https://security.netapp.com/advisory/ntap-20210625-0002/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BZOMV5J4PMZAORVT64BKLV6YIZAFDGX6/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QVM4UJ3376I6ZVOYMHBNX4GY3NIV52WV/
- https://security.gentoo.org/glsa/202107-05
- https://bugzilla.redhat.com/show_bug.cgi?id=1956522
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://lists.debian.org/debian-lts-announce/2021/05/msg00008.html
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BZOMV5J4PMZAORVT64BKLV6YIZAFDGX6/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QVM4UJ3376I6ZVOYMHBNX4GY3NIV52WV/