CVE-2016-0772

Advisory lineage Upstream: 0 Downstream: 24
Modified
Published: 02 Sept 2016, 14:00
Last modified:05 Aug 2024, 22:30

Vulnerability Summary

Overall Risk (default)
medium
38/100
CVSS Score
6.5 MEDIUM
v3.0 (nvd)
EPSS Score
7.64% LOW
8% probability +1.87%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

02 Sept 2016, 14:00
Published
Vulnerability first disclosed
05 Aug 2024, 22:30
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
  • v2.0•MEDIUM•Score: 5.8AV:N/AC:M/Au:N/C:P/I:P/A:N

EPSS Trends

Current EPSS score: 7.64%• Percentile: 92%

Techniques & Countermeasures

  • CWE-693•Protection Mechanism Failure

    The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.

Affected Systems

  • python•python

    3.5.0 | 3.5.1 | 3.0 | 3.0.1 | 3.1.0 | 3.1.1 | 3.1.2 | 3.1.3 | 3.1.4 | 3.1.5 | 3.2.0 | 3.2.1 | 3.2.2 | 3.2.3 | 3.2.4 | 3.2.5 | 3.2.6 | 3.3.0 | 3.3.1 | 3.3.2 | 3.3.3 | 3.3.4 | 3.3.5 | 3.3.6 | 3.4.0 | 3.4.1 | 3.4.2 | 3.4.3 | 3.4.4 | ≤ 2.7.11

References (18)