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.
Metrics
CVSS 3.0 5.9/10
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- 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
- 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
Timeline
- Published
- Jun 7, 2016
- Last modified
- Jun 17, 2026
- NVD status
- Modified