CVE-2019-16056

HIGH severity · CVSS 7.5

7.5CVSS HIGH

Summary

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.

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

Confidentiality impactHigh

Integrity impactNone

Availability impactNone

Exploit probability (EPSS)1%

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products we track (1)

Python

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Additional information

NVD record
https://bugs.python.org/issue34155Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00062.htmlAdvisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00063.htmlAdvisory
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00012.htmlAdvisory
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00021.htmlAdvisory
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.htmlAdvisory
https://access.redhat.com/errata/RHSA-2019:3725Advisory
https://access.redhat.com/errata/RHSA-2019:3948Advisory