CVE-2013-7440
MEDIUM severity · CVSS 5.9 · CWE-19
5.9CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityHigh
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactHigh
Availability impactNone
Exploit probability (EPSS)2%
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- 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