Medium severity · published May 14, 2021
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
5.9
CVSS
3.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.6% · higher than 89% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
libxml2 ·
libxml2 2.9.11 · source: vendor, NVD
AI
Active IQ Unified Manager · Netapp
All versions, or not specified · source: NVD
CD
Clustered Data Ontap · Netapp
All versions, or not specified · source: NVD
CD
Clustered Data Ontap Antivirus Connector · Netapp
All versions, or not specified · source: NVD
CC
DL
Debian Linux · Debian
9.0 · source: NVD
EL
Enterprise Linux · Redhat
6.0; 7.0; 8.0 · source: NVD
EM
Enterprise Manager Base Platform · Oracle
13.4.0.0; 13.5.0.0 · source: NVD
EM
Enterprise Manager Ops Center · Oracle
12.4.0.0 · source: NVD
FE
Fedora · Fedoraproject
33; 34 · source: NVD
HH
Hci H410c Firmware · Netapp
All versions, or not specified · source: NVD
JC
Jboss Core Services · Redhat
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3537
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-3537
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1956522
Mailing List
https://lists.debian.org/debian-lts-announce/2021/05/msg00008.html
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BZOMV5J4PMZAORVT64BKLV6YIZAFDGX6/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QVM4UJ3376I6ZVOYMHBNX4GY3NIV52WV/
Third Party Advisory
https://security.gentoo.org/glsa/202107-05
Third Party Advisory
https://security.netapp.com/advisory/ntap-20210625-0002/
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