What’s Vulnerable › Vulnerabilities

CVE-2019-19956

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-12-24 · updated 2026-10-14
• Weakness: CWE-401

Description

xmlParseBalancedChunkMemoryRecover in parser.c in libxml2 before 2.9.10 has a memory leak related to newDoc->oldNs.

Affected products

• Canonical Ubuntu Linux: 12.04, 14.04, 16.04, 18.04, 19.10
• Debian Linux: 8.0, 9.0
• Fedoraproject Fedora: 30, 32
• Active IQ Unified Manager for VMware vSphere, Linux, and Microsoft Windows: all versions
• Clustered Data ONTAP: all versions
• NetApp Clustered Data Ontap Antivirus Connector: all versions
• NetApp Manageability Software Development Kit: all versions
• NetApp ONTAP Select Deploy administration utility: all versions
• NetApp Steelstore Cloud Integrated Storage: all versions
• Oracle Real User Experience Insight: 13.3.1.0
• Siemens SINEMA Remote Connect Server: before 3.0 — fixed in 3.0
• xmlsoft libxml2: before 2.9.10 — fixed in 2.9.10

How to fix

Upgrade to a fixed version: Siemens SINEMA Remote Connect Server 3.0; xmlsoft libxml2 2.9.10. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00047.html
• http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00005.html
• https://cert-portal.siemens.com/productcert/pdf/ssa-292794.pdf
• https://gitlab.gnome.org/GNOME/libxml2/commit/5a02583c7e683896d84878bd90641d8d9b0d0549
• https://lists.debian.org/debian-lts-announce/2019/12/msg00032.html
• https://lists.debian.org/debian-lts-announce/2020/09/msg00009.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5R55ZR52RMBX24TQTWHCIWKJVRV6YAWI/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JDPF3AAVKUAKDYFMFKSIQSVVS3EEFPQH/
• https://security.netapp.com/advisory/ntap-20200114-0002/
• https://us-cert.cisa.gov/ics/advisories/icsa-21-103-08
• https://usn.ubuntu.com/4274-1/
• https://www.oracle.com/security-alerts/cpujul2020.html

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