DEBIAN-CVE-2016-0772

Advisory lineage Upstream: 1 Downstream: 3
Upstream
CVE-2016-0772
Published: 02 Sept 2016, 14:59
Last modified:28 Apr 2026, 20:15

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.5 MEDIUM
3.0 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

02 Sept 2016, 14:59
Published
Vulnerability first disclosed
28 Apr 2026, 20:15
Last Modified
Vulnerability information updated

Description

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 Metrics

  • v3.0•MEDIUM•Score: 6.5CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N

Affected Systems

  • debian•python2.7

    < 2.7.12~rc1-1

References (1)