PT-2019-3469 · Expat+10 · Libexpat+10
Published
2019-08-28
·
Updated
2026-04-01
·
CVE-2019-15903
CVSS v3.1
7.5
High
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
libexpat versions prior to 2.2.8
Description
The issue is related to a heap-based buffer over-read in libexpat, which can occur when crafted XML input fools the parser into changing from DTD parsing to document parsing too early. A consecutive call to
XML GetCurrentLineNumber (or XML GetCurrentColumnNumber) then results in the buffer over-read. This can be exploited by a remote attacker using a specially crafted XML file, potentially leading to a denial of service.Recommendations
For versions prior to 2.2.8, update to version 2.2.8 or later to resolve the issue. As a temporary workaround, consider restricting the use of libexpat until a patch is available. Avoid using
XML GetCurrentLineNumber and XML GetCurrentColumnNumber functions with potentially malicious XML input until the issue is resolved.Exploit
Fix
Out of bounds Read
XXE
XML Entity Expansion
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Related Identifiers
Affected Products
Alt Linux
Centos
Debian
Google Chrome
Linuxmint
Red Hat
Rocky Linux
Suse
Ubuntu
Itunes
Libexpat