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Python < 3.2.6, 3.3.x < 3.3.3 Wildcard DoS Vulnerability (bpo-17980) - Linux
Information
Severity
Severity
Medium
Family
Family
Denial of Service
CVSSv2 Base
CVSSv2 Base
4.3
CVSSv2 Vector
CVSSv2 Vector
AV:N/AC:M/Au:N/C:N/I:N/A:P
Solution Type
Solution Type
Vendor Patch
Created
Created
2 years ago
Modified
Modified
2 years ago
Summary
Python's ssl.match_hostname() trips over crafted wildcard names.
Insight
Insight
If the name in the certificate contains many * characters (wildcard), matching the compiled regular expression against the host name can take a very long time.
Affected Software
Affected Software
Python before 3.2.6 and 3.3 before 3.3.3.
Detection Method
Detection Method
Checks if a vulnerable version is present on the target host.
Solution
Solution
The vendor has released updates. Please see the references for more information.