Vulnerability CVE-2019-16056


Published: 2019-09-06

Description:
An issue was discovered in Python through 2.7.16, 3.x through 3.5.7, 3.6.x through 3.6.9, and 3.7.x through 3.7.4. The email module wrongly parses email addresses that contain multiple @ characters. An application that uses the email module and implements some kind of checks on the From/To headers of a message could be tricked into accepting an email address that should be denied. An attack may be the same as in CVE-2019-11340; however, this CVE applies to Python more generally.

Type:

CWE-20

(Improper Input Validation)

Vendor: Python
Product: Python 
Version:
3.7.4
3.7.3
3.7.2
3.7.1
3.7.0
3.6.9
3.6.8
3.6.7
3.6.6
3.6.5
3.6.4
3.6.3
3.6.2
3.6.1
3.6.0
3.5.7
3.5.6
3.5.5
3.5.4
3.5.3
3.5.2
3.5.1
3.5.0
3.4.9
3.4.8
3.4.7
3.4.6
3.4.5
3.4.4
3.4.3
3.4.2
3.4.10
3.4.1
3.4.0
3.3.7
3.3.6
3.3.5
3.3.4
3.3.3
3.3.2
3.3.1
3.3.0
3.2.6
3.2.5
3.2.4
3.2.3
3.2.2
3.2.1
3.2.0
3.1.5
3.1.4
3.1.3
3.1.2
3.1.1
3.1.0
3.0.1
3.0.0
2.7.16

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None

 References:
https://bugs.python.org/issue34155
https://github.com/python/cpython/commit/8cb65d1381b027f0b09ee36bfed7f35bb4dec9a9
https://lists.debian.org/debian-lts-announce/2019/09/msg00018.html
https://lists.debian.org/debian-lts-announce/2019/09/msg00019.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/E2HP37NUVLQSBW3J735A2DQDOZ4ZGBLY/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ER6LONC2B2WYIO56GBQUDU6QTWZDPUNQ/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/K4KZEFP6E4YPYB52AF4WXCUDSGQOTF37/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NF3DRDGMVIRYNZMSLJIHNW47HOUQYXVG/

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