CVE-2021-3537
MEDIUM severity · CVSS 5.9 · CWE-476
5.9CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityHigh
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)4%
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://bugzilla.redhat.com/show_bug.cgi?id=1956522 ↗
Additional information
- NVD record
- https://bugzilla.redhat.com/show_bug.cgi?id=1956522Patch
- https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch
- https://lists.debian.org/debian-lts-announce/2021/05/msg00008.htmlAdvisory
- 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/
- https://security.gentoo.org/glsa/202107-05Advisory
- https://security.netapp.com/advisory/ntap-20210625-0002/Advisory
- https://www.oracle.com/security-alerts/cpujul2022.html