CVE-2019-15903

Severity CVSS v4.0:

Pending analysis

Type:

CWE-125 Out-of-bounds Read

Publication date:

04/09/2019

Last modified:

30/05/2025

Description

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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

Base Score 3.x

7.50

Severity 3.x

HIGH

Vector 2.0

AV:N/AC:L/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Physical

Base Score 2.0

5.00

Severity 2.0

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:libexpat_project:libexpat::::::::		2.2.8 (excluding)
cpe:2.3:a:python:python::::::::	2.7.0 (including)	2.7.17 (excluding)
cpe:2.3:a:python:python::::::::	3.5.0 (including)	3.5.8 (excluding)
cpe:2.3:a:python:python::::::::	3.6.0 (including)	3.6.10 (excluding)
cpe:2.3:a:python:python::::::::	3.7.0 (including)	3.7.5 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2019-15903

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools