CVE-2021-3537

MEDIUMCVSS 5.9/10EPSS 3.50%

Last modified

CVE-2021-3537 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. 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. EPSS estimates a 3.50% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
5.9/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
3.50%

87.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
XmlsoftLibxml2< 2.9.11
RedhatJboss Core ServicesAll versions
RedhatEnterprise Linux6.0
RedhatEnterprise Linux7.0
RedhatEnterprise Linux8.0
DebianDebian Linux9.0
FedoraprojectFedora33
FedoraprojectFedora34
NetappActive Iq Unified ManagerAll versions
NetappClustered Data OntapAll versions
NetappClustered Data Ontap Antivirus ConnectorAll versions
NetappManageability Software Development KitAll versions
NetappOntap Select Deploy Administration UtilityAll versions
NetappSnapdriveAll versions
NetappHci H410c FirmwareAll versions
OracleCommunications Cloud Native Core Network Function Cloud Native Environment1.10.0
OracleEnterprise Manager Base Platform13.4.0.0
OracleEnterprise Manager Base Platform13.5.0.0
OracleEnterprise Manager Ops Center12.4.0.0
OracleMysql Workbench<= 8.0.26
OracleOpenjdk8Update301
OraclePeoplesoft Enterprise Peopletools8.58
OracleReal User Experience Insight13.4.1.0
OracleReal User Experience Insight13.5.1.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-3537?
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.
How severe is CVE-2021-3537?
CVE-2021-3537 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 3.50% probability of exploitation in the next 30 days.
How do I fix CVE-2021-3537?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-3537?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST