Medium severity · published Jun 7, 2016
CVE-2013-7440
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…
5.9
CVSS
1.9%
EPSS
No
On KEV
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
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.9% · higher than 79% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PY
Python · Python
through 2.7.8; 3.0; 3.0.1; 3.1; 3.1.1; 3.1.2; +20 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2013-7440
CVE.org
https://www.cve.org/CVERecord?id=CVE-2013-7440
seclists.org
http://seclists.org/oss-sec/2015/q2/483
seclists.org
http://seclists.org/oss-sec/2015/q2/523
www.securityfocus.com
http://www.securityfocus.com/bid/74707
access.redhat.com
https://access.redhat.com/errata/RHSA-2016:1166
bugs.python.org
https://bugs.python.org/issue17997
bugzilla.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=1224999
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