CVE-2019-19956

libxml2: memory leak in xmlParseBalancedChunkMemoryRecover in parser.c

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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

La función xmlParseBalancedChunkMemoryRecover en el archivo parser.c en libxml2 versiones anteriores a 2.9.10, presenta una pérdida de memoria relacionada con newDoc-)oldNs.

Red Hat JBoss Core Services is a set of supplementary software for Red Hat JBoss middleware products. This software, such as Apache HTTP Server, is common to multiple JBoss middleware products, and is packaged under Red Hat JBoss Core Services to allow for faster distribution of updates, and for a more consistent update experience. This release adds the new Apache HTTP Server 2.4.37 Service Pack 3 packages that are part of the JBoss Core Services offering. This release serves as a replacement for Red Hat JBoss Core Services Pack Apache Server 2.4.37 Service Pack 2 and includes bug fixes and enhancements. Issues addressed include buffer over-read, denial of service, and memory leak vulnerabilities.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-12-24 CVE Reserved
2019-12-24 CVE Published
2024-08-05 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-401: Missing Release of Memory after Effective Lifetime
CWE-772: Missing Release of Resource after Effective Lifetime

CAPEC

References (14)

URL	Tag	Source
https://cert-portal.siemens.com/productcert/pdf/ssa-292794.pdf	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/12/msg00032.html	Mailing List
https://lists.debian.org/debian-lts-announce/2020/09/msg00009.html	Mailing List
https://security.netapp.com/advisory/ntap-20200114-0002	Third Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-103-08	Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2020.html	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://gitlab.gnome.org/GNOME/libxml2/commit/5a02583c7e683896d84878bd90641d8d9b0d0549	2023-11-07

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00047.html	2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00005.html	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5R55ZR52RMBX24TQTWHCIWKJVRV6YAWI	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JDPF3AAVKUAKDYFMFKSIQSVVS3EEFPQH	2023-11-07
https://usn.ubuntu.com/4274-1	2023-11-07
https://access.redhat.com/security/cve/CVE-2019-19956	2021-03-22
https://bugzilla.redhat.com/show_bug.cgi?id=1788856	2021-03-22

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Xmlsoft Search vendor "Xmlsoft"		Libxml2 Search vendor "Xmlsoft" for product "Libxml2"				< 2.9.10 Search vendor "Xmlsoft" for product "Libxml2" and version " < 2.9.10"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected
Oracle Search vendor "Oracle"		Real User Experience Insight Search vendor "Oracle" for product "Real User Experience Insight"				13.3.1.0 Search vendor "Oracle" for product "Real User Experience Insight" and version "13.3.1.0"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				30 Search vendor "Fedoraproject" for product "Fedora" and version "30"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				32 Search vendor "Fedoraproject" for product "Fedora" and version "32"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04"		esm		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				19.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "19.10"		-		Affected
Netapp Search vendor "Netapp"		Active Iq Unified Manager Search vendor "Netapp" for product "Active Iq Unified Manager"				-		vmware_vsphere		Affected
Netapp Search vendor "Netapp"		Clustered Data Ontap Search vendor "Netapp" for product "Clustered Data Ontap"				-		-		Affected
Netapp Search vendor "Netapp"		Clustered Data Ontap Antivirus Connector Search vendor "Netapp" for product "Clustered Data Ontap Antivirus Connector"				-		-		Affected
Netapp Search vendor "Netapp"		Manageability Software Development Kit Search vendor "Netapp" for product "Manageability Software Development Kit"				-		-		Affected
Netapp Search vendor "Netapp"		Ontap Select Deploy Administration Utility Search vendor "Netapp" for product "Ontap Select Deploy Administration Utility"				-		-		Affected
Netapp Search vendor "Netapp"		Steelstore Cloud Integrated Storage Search vendor "Netapp" for product "Steelstore Cloud Integrated Storage"				-		-		Affected
Siemens Search vendor "Siemens"		Sinema Remote Connect Server Search vendor "Siemens" for product "Sinema Remote Connect Server"				< 3.0 Search vendor "Siemens" for product "Sinema Remote Connect Server" and version " < 3.0"		-		Affected