CVE-2013-7440 Information

Description

The ssl.match_hostname function in CPython (aka Python) before 2.7.9 and 3.x before 3.3.3 does not properly handle wildcards in hostnames which might allow man-in-the-middle attackers to spoof servers via a crafted certificate.

CVSS Vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Reference

http://seclists.org/oss-sec/2015/q2/483 http://seclists.org/oss-sec/2015/q2/523 http://www.securityfocus.com/bid/74707 https://access.redhat.com/errata/RHSA-2016:1166 https://bugs.python.org/issue17997 https://bugzilla.redhat.com/show_bug.cgi?id=1224999 https://hg.python.org/cpython/rev/10d0edadbcdd

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

5.9