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CVE-2019-15903

Good to know:

Date: September 4, 2019

In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to document parsing too early; a consecutive call to XML_GetCurrentLineNumber (or XML_GetCurrentColumnNumber) then resulted in a heap-based buffer over-read.

Language: C

Severity Score

7.5

Related Resources (65)

Url: https://usn.ubuntu.com/4335-1/

Url: https://www.oracle.com/security-alerts/cpuapr2020.html

Url: https://access.redhat.com/errata/RHSA-2019:3756

Url: http://packetstormsecurity.com/files/154947/Slackware-Security-Advisory-mozilla-firefox-Updates.html

Url: http://seclists.org/fulldisclosure/2019/Dec/27

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A4TZKPJFTURRLXIGLB34WVKQ5HGY6JJA/

Url: https://usn.ubuntu.com/4165-1/

Url: https://security.alpinelinux.org/vuln/CVE-2019-15903

Url: http://seclists.org/fulldisclosure/2019/Dec/26

Url: https://lists.debian.org/debian-lts-announce/2019/11/msg00017.html

Url: https://access.redhat.com/errata/RHSA-2019:3237

Url: http://seclists.org/fulldisclosure/2019/Dec/23

Url: https://www.oracle.com/security-alerts/cpuoct2020.html

Url: http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00000.html

Url: http://packetstormsecurity.com/files/154927/Slackware-Security-Advisory-python-Updates.html

Url: https://seclists.org/bugtraq/2019/Dec/21

Url: https://seclists.org/bugtraq/2019/Dec/23

Url: https://www.debian.org/security/2019/dsa-4549

Url: https://github.com/libexpat/libexpat/issues/317

Url: https://usn.ubuntu.com/4202-1/

Url: http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00013.html

Url: http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00019.html

Url: https://www.tenable.com/security/tns-2021-11

Url: http://seclists.org/fulldisclosure/2019/Dec/30

Url: http://packetstormsecurity.com/files/154503/Slackware-Security-Advisory-expat-Updates.html

Url: http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00016.html

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/S26LGXXQ7YF2BP3RGOWELBFKM6BHF6UG/

Url: https://security-tracker.debian.org/tracker/CVE-2019-15903

Url: http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00002.html

Url: http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00080.html

Url: https://lists.debian.org/debian-lts-announce/2019/11/msg00006.html

Url: http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00003.html

Url: https://access.redhat.com/errata/RHSA-2019:3210

Url: https://github.com/libexpat/libexpat/commit/c20b758c332d9a13afbbb276d30db1d183a85d43

Url: https://support.apple.com/kb/HT210785

Url: https://github.com/libexpat/libexpat/issues/342

Url: https://support.apple.com/kb/HT210789

Url: https://support.apple.com/kb/HT210788

Url: http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html

Url: https://security.gentoo.org/glsa/201911-08

Url: http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00018.html

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2019-15903

Url: https://usn.ubuntu.com/4132-2/

Url: https://access.redhat.com/security/cve/CVE-2019-15903

Url: https://support.apple.com/kb/HT210790

Url: https://nvd.nist.gov/vuln/detail/CVE-2019-15903

Url: https://seclists.org/bugtraq/2019/Nov/24

Url: https://seclists.org/bugtraq/2019/Sep/37

Url: https://support.apple.com/kb/HT210795

Url: https://support.apple.com/kb/HT210794

Url: https://support.apple.com/kb/HT210793

Url: http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00008.html

Url: https://www.debian.org/security/2019/dsa-4571

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BDUTI5TVQWIGGQXPEVI4T2ENHFSBMIBP/

Url: https://seclists.org/bugtraq/2019/Sep/30

Url: http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00081.html

Url: https://github.com/libexpat/libexpat/pull/318

Url: https://seclists.org/bugtraq/2019/Oct/29

Url: https://security.netapp.com/advisory/ntap-20190926-0004/

Url: https://www.debian.org/security/2019/dsa-4530

Url: https://seclists.org/bugtraq/2019/Dec/17

Url: https://seclists.org/bugtraq/2019/Nov/1

Url: http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00017.html

Url: https://usn.ubuntu.com/4132-1/

Url: https://www.mend.io/vulnerability-database/CVE-2019-15903

Severity Score

7.5

Weakness Type (CWE)

Improper Restriction of XML External Entity Reference ('XXE')

CWE-611

Out-of-bounds Read

CWE-125

Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

CWE-776

Top Fix

Upgrade Version

Upgrade to version 2.2.8

CVSS v3.1

Base Score:	7.5
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	HIGH

CVSS v2

Base Score:	5.0
Access Vector (AV):	NETWORK
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	PARTIAL
Additional information:

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