Python DoS Vulnerability (bpo-44394) - Windows

Information

Severity

Severity

Medium

Family

Family

Denial of Service

CVSSv2 Base

CVSSv2 Base

6.8

CVSSv2 Vector

CVSSv2 Vector

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

Solution Type

Solution Type

Vendor Patch

Created

Created

1 month ago

Modified

Modified

1 month ago

Summary

Python is prone to a denial of service (DoS) vulnerability.

Insight

Insight

On Windows and macOS, Python uses a vendored copy of libexpat which is vulnerable to the XML 'Billion Laughs' expansion denial of service attack. Updating libexpat copy in Python to libexpat 2.4.0 or newer fix the vulnerability.

Affected Software

Affected Software

Python versions prior to 3.6.15, 3.7.x prior to 3.7.12, 3.8.x prior to 3.8.12 and 3.9.x prior to 3.9.7.

Detection Method

Detection Method

Checks if a vulnerable version is present on the target host.

Solution

Solution

Update to version 3.6.15, 3.7.12, 3.8.12, 3.9.7, 3.10.0 or later.

Common Vulnerabilities and Exposures (CVE)

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