Vulnerabilities
Misconfiguration
Runtime Security
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CVE Vulnerabilities

CVE-2019-20388

Missing Release of Memory after Effective Lifetime

Published: Jan 21, 2020 | Modified: Nov 21, 2024
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
7.5 MODERATE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu
LOW
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2019-20388
CWEhttps://cwe.mitre.org/data/definitions/401.html

xmlSchemaPreRun in xmlschemas.c in libxml2 2.9.10 allows an xmlSchemaValidateStream memory leak.

Weakness

The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory.

Affected Software

Name Vendor Start Version End Version
Libxml2 Xmlsoft 2.9.10 (including) 2.9.10 (including)
Libxml2 Ubuntu bionic *
Libxml2 Ubuntu eoan *
Libxml2 Ubuntu esm-infra/xenial *
Libxml2 Ubuntu precise/esm *
Libxml2 Ubuntu trusty *
Libxml2 Ubuntu trusty/esm *
Libxml2 Ubuntu upstream *
Libxml2 Ubuntu xenial *
JBoss Core Services on RHEL 6 RedHat jbcs-httpd24-curl-0:7.64.1-36.jbcs.el6 *
JBoss Core Services on RHEL 6 RedHat jbcs-httpd24-httpd-0:2.4.37-57.jbcs.el6 *
JBoss Core Services on RHEL 6 RedHat jbcs-httpd24-mod_cluster-native-0:1.3.14-4.Final_redhat_2.jbcs.el6 *
JBoss Core Services on RHEL 6 RedHat jbcs-httpd24-mod_http2-0:1.15.7-3.jbcs.el6 *
JBoss Core Services on RHEL 6 RedHat jbcs-httpd24-mod_jk-0:1.2.48-4.redhat_1.jbcs.el6 *
JBoss Core Services on RHEL 6 RedHat jbcs-httpd24-mod_md-1:2.0.8-24.jbcs.el6 *
JBoss Core Services on RHEL 6 RedHat jbcs-httpd24-mod_security-0:2.9.2-51.GA.jbcs.el6 *
JBoss Core Services on RHEL 6 RedHat jbcs-httpd24-nghttp2-0:1.39.2-25.jbcs.el6 *
JBoss Core Services on RHEL 7 RedHat jbcs-httpd24-curl-0:7.64.1-36.jbcs.el7 *
JBoss Core Services on RHEL 7 RedHat jbcs-httpd24-httpd-0:2.4.37-57.jbcs.el7 *
JBoss Core Services on RHEL 7 RedHat jbcs-httpd24-mod_cluster-native-0:1.3.14-4.Final_redhat_2.jbcs.el7 *
JBoss Core Services on RHEL 7 RedHat jbcs-httpd24-mod_http2-0:1.15.7-3.jbcs.el7 *
JBoss Core Services on RHEL 7 RedHat jbcs-httpd24-mod_jk-0:1.2.48-4.redhat_1.jbcs.el7 *
JBoss Core Services on RHEL 7 RedHat jbcs-httpd24-mod_md-1:2.0.8-24.jbcs.el7 *
JBoss Core Services on RHEL 7 RedHat jbcs-httpd24-mod_security-0:2.9.2-51.GA.jbcs.el7 *
JBoss Core Services on RHEL 7 RedHat jbcs-httpd24-nghttp2-0:1.39.2-25.jbcs.el7 *
JBoss Core Services on RHEL 7 RedHat jbcs-httpd24-openssl-pkcs11-0:0.4.10-7.jbcs.el7 *
Red Hat Enterprise Linux 7 RedHat libxml2-0:2.9.1-6.el7.5 *
Red Hat Enterprise Linux 8 RedHat libxml2-0:2.9.7-8.el8 *
Red Hat Enterprise Linux 8 RedHat libxml2-0:2.9.7-8.el8 *
Red Hat OpenShift Do RedHat openshiftdo/odo-init-image-rhel7:1.1.3-2 *
Text-Only JBCS RedHat libxml2 *

Potential Mitigations

  • Choose a language or tool that provides automatic memory management, or makes manual memory management less error-prone.
  • For example, glibc in Linux provides protection against free of invalid pointers.
  • When using Xcode to target OS X or iOS, enable automatic reference counting (ARC) [REF-391].
  • To help correctly and consistently manage memory when programming in C++, consider using a smart pointer class such as std::auto_ptr (defined by ISO/IEC ISO/IEC 14882:2003), std::shared_ptr and std::unique_ptr (specified by an upcoming revision of the C++ standard, informally referred to as C++ 1x), or equivalent solutions such as Boost.

References

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