What is CVE-2019-19956?

CVE-2019-19956 is a high-severity software vulnerability (CWE-401) with a CVSS score of 7.5. xmlParseBalancedChunkMemoryRecover in parser.c in libxml2 before 2.9.10 has a memory leak related to newDoc->oldNs.

Is CVE-2019-19956 being actively exploited?

It is not currently in CISA's KEV catalog. Its EPSS exploitation probability is 6%.

What products does CVE-2019-19956 affect?

Tracked products affected include Ubuntu, Debian, Fedora. Check the version you run to see whether it is affected.

How do I fix CVE-2019-19956?

Apply the vendor fix promptly. An official patch or advisory is available. Upgrade affected products to a fixed version.

← All products

CVE-2019-19956

HIGH severity · CVSS 7.5 · CWE-401

7.5CVSS HIGH

Summary

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

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

Confidentiality impactNone

Integrity impactNone

Availability impactHigh

Exploit probability (EPSS)6%

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

Affected products we track (3)

Ubuntu Debian Fedora

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Official patch: https://gitlab.gnome.org/GNOME/libxml2/commit/5a02583c7e683896d84878bd90641d8d9b0d0549 ↗

Additional information

NVD record
https://gitlab.gnome.org/GNOME/libxml2/commit/5a02583c7e683896d84878bd90641d8d9b0d0549Patch
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.pdfAdvisory
https://lists.debian.org/debian-lts-announce/2019/12/msg00032.htmlAdvisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00009.htmlAdvisory
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/