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prionPRIOn knowledge basePRION:CVE-2013-4238
HistoryAug 18, 2013 - 2:52 a.m.

Design/Logic Flaw

2013-08-1802:52:00
PRIOn knowledge base
www.prio-n.com
7

8.9 High

AI Score

Confidence

High

0.003 Low

EPSS

Percentile

65.4%

The ssl.match_hostname function in the SSL module in Python 2.6 through 3.4 does not properly handle a ‘\0’ character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.