Data Handling in Python - CVE-2013-7440
Published: June 7, 2016 / Updated: August 9, 2020
Vulnerability identifier: #VU40247
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2013-7440
CWE-ID: CWE-19
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Python.org
Affected software:
Python
Python
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to manipulate data.
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.
How to mitigate CVE-2013-7440
Install update from vendor's website.
Sources
- 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