CVE-2024-6923

Email header injection due to unquoted newlines

Description

There is a MEDIUM severity vulnerability affecting CPython. The email module didn’t properly quote newlines for email headers when serializing an email message allowing for header injection when an email is serialized.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.08%
Vendor Advisory python.org
Affected: Python Software Foundation CPython
Published at:
Updated at:

References

Link Tags
https://github.com/python/cpython/pull/122233 patch
https://github.com/python/cpython/issues/121650 issue tracking
https://mail.python.org/archives/list/security-announce@python.org/thread/QH3BUOE2DYQBWP7NAQ7UNHPPOELKISRW/ vendor advisory
https://github.com/python/cpython/commit/4766d1200fdf8b6728137aa2927a297e224d5fa7 patch
https://github.com/python/cpython/commit/4aaa4259b5a6e664b7316a4d60bdec7ee0f124d0 patch
https://github.com/python/cpython/commit/06f28dc236708f72871c64d4bc4b4ea144c50147 patch
https://github.com/python/cpython/commit/b158a76ce094897c870fb6b3de62887b7ccc33f1 patch
https://github.com/python/cpython/commit/f7be505d137a22528cb0fc004422c0081d5d90e6 patch
https://github.com/python/cpython/commit/f7c0f09e69e950cf3c5ada9dbde93898eb975533 patch
https://github.com/python/cpython/commit/097633981879b3c9de9a1dd120d3aa585ecc2384 patch
http://www.openwall.com/lists/oss-security/2024/08/01/3
http://www.openwall.com/lists/oss-security/2024/08/02/2
https://lists.debian.org/debian-lts-announce/2025/01/msg00005.html
https://security.netapp.com/advisory/ntap-20240926-0003/

Frequently Asked Questions

What is the severity of CVE-2024-6923?
CVE-2024-6923 has been scored as a medium severity vulnerability.
How to fix CVE-2024-6923?
To fix CVE-2024-6923, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-6923 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-6923 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-6923?
CVE-2024-6923 affects Python Software Foundation CPython.
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