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CVE-2019-15903

HIGHCVSS 7.5/10EPSS 6.64%

Last modified

CVE-2019-15903 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 6.64% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
6.64%

93.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Libexpat ProjectLibexpat< 2.2.8
PythonPython>= 2.7.0, < 2.7.17
PythonPython>= 3.5.0, < 3.5.8
PythonPython>= 3.6.0, < 3.6.10
PythonPython>= 3.7.0, < 3.7.5

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-15903?
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.
How severe is CVE-2019-15903?
CVE-2019-15903 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 6.64% probability of exploitation in the next 30 days.
How do I fix CVE-2019-15903?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-15903?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST