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cve[email protected]CVE-2019-15903
HistorySep 04, 2019 - 6:15 a.m.

CVE-2019-15903

2019-09-0406:15:10
CWE-776
CWE-125
web.nvd.nist.gov
664
5
libexpat
xml
parser
dtd
security vulnerability
cve-2019-15903

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

8.2 High

AI Score

Confidence

High

0.005 Low

EPSS

Percentile

76.6%

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.

Affected configurations

NVD
Node
libexpat_projectlibexpatRange<2.2.8
Node
pythonpythonRange2.7.02.7.17
OR
pythonpythonRange3.5.03.5.8
OR
pythonpythonRange3.6.03.6.10
OR
pythonpythonRange3.7.03.7.5

References

Social References

More

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

8.2 High

AI Score

Confidence

High

0.005 Low

EPSS

Percentile

76.6%