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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

1 year ago

Modified

Modified

1 year 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.

Common Vulnerabilities and Exposures (CVE)