CVE-2016-0772
MEDIUM 6.5EPSS 14.5%
The smtplib library in CPython (aka Python) before 2.7.12, 3.x before 3.4.5, and 3.5.x before 3.5.2 does not return an error when StartTLS fails, which might allow man-in-the-middle attackers to bypass the TLS protections by leveraging a network position between the client and the registry to block the StartTLS command, aka a "StartTLS stripping attack."
- CVSS v3.0 NVD
- 6.5 MEDIUM
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N - CVSS v2.0 NVD
- 5.8 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:N - EPSS
- 14.52% chance of exploitation in the next 30 days, 97th percentile
- Published
- 2016-09-02
- Updated
- 2024-08-05
ExploitDB entries (1)
Security advisories
- https://bugzilla.redhat.com/show_bug.cgi?id=1303647
- https://hg.python.org/cpython/rev/b3ce713fb9be
- https://hg.python.org/cpython/rev/d590114c2394
- https://docs.python.org/3.4/whatsnew/changelog.html#python-3-4-5
- https://docs.python.org/3.5/whatsnew/changelog.html#python-3-5-2
- https://hg.python.org/cpython/raw-file/v2.7.12/Misc/NEWS
- http://www.securityfocus.com/bid/91225