Vulnerability identifier: #VU22617
Vulnerability risk: Low
CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-20
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Python
Universal components / Libraries /
Scripting languages
Vendor: Python.org
Description
The vulnerability allows a remote attacker to bypass certain security restrictions.
The vulnerability exists due to insufficient validation of user-supplied input when processing multiple occurrences of the "@" character in an email address. 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.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Python: 2.7.0 - 2.7.16, 3.5.0 - 3.5.7, 3.6.0 - 3.6.9, 3.7.0 - 3.7.4
External links
http://bugs.python.org/issue34155
http://github.com/python/cpython/commit/8cb65d1381b027f0b09ee36bfed7f35bb4dec9a9
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.