CVE-2023-40217
Apache Python SSL improperly Handled Closed TLS Client
Description
An issue was discovered in Python before 3.8.18, 3.9.x before 3.9.18, 3.10.x before 3.10.13, and 3.11.x before 3.11.5. It primarily affects servers (such as HTTP servers) that use TLS client authentication. If a TLS server-side socket is created, receives data into the socket buffer, and then is closed quickly, there is a brief window where the SSLSocket instance will detect the socket as "not connected" and won't initiate a handshake, but buffered data will still be readable from the socket buffer. This data will not be authenticated if the server-side TLS peer is expecting client certificate authentication, and is indistinguishable from valid TLS stream data. Data is limited in size to the amount that will fit in the buffer. (The TLS connection cannot directly be used for data exfiltration because the vulnerable code path requires that the connection be closed on initialization of the SSLSocket.)
INFO
Published Date :
Aug. 25, 2023, 1:15 a.m.
Last Modified :
Nov. 21, 2024, 8:19 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update Python packages to the latest versions.
- Upgrade to Python 3.11.5, 3.10.13, 3.9.18, or 3.8.18 or later.
Public PoC/Exploit Available at Github
CVE-2023-40217 has a 2 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-40217.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-40217 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-40217
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
CLI utility to query Shodan's CVE DB
cve-search shodan shodan-client
Go
Github action to check findings of aws inspector scans
TypeScript
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-40217 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-40217 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2023/09/msg00022.html Added Reference https://lists.debian.org/debian-lts-announce/2023/10/msg00017.html Added Reference https://mail.python.org/archives/list/security-announce%40python.org/thread/PEPLII27KYHLF4AK3ZQGKYNCRERG4YXY/ Added Reference https://security.netapp.com/advisory/ntap-20231006-0014/ Added Reference https://www.python.org/dev/security/ -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference MITRE https://mail.python.org/archives/list/security-announce%40python.org/thread/PEPLII27KYHLF4AK3ZQGKYNCRERG4YXY/ [No types assigned] Removed Reference MITRE https://mail.python.org/archives/list/[email protected]/thread/PEPLII27KYHLF4AK3ZQGKYNCRERG4YXY/ -
CVE Modified by [email protected]
Oct. 11, 2023
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2023/10/msg00017.html [No Types Assigned] -
CVE Modified by [email protected]
Oct. 06, 2023
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20231006-0014/ [No Types Assigned] -
CVE Modified by [email protected]
Sep. 20, 2023
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2023/09/msg00022.html [No Types Assigned] -
Initial Analysis by [email protected]
Aug. 31, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Changed Reference Type https://mail.python.org/archives/list/[email protected]/thread/PEPLII27KYHLF4AK3ZQGKYNCRERG4YXY/ No Types Assigned https://mail.python.org/archives/list/[email protected]/thread/PEPLII27KYHLF4AK3ZQGKYNCRERG4YXY/ Vendor Advisory Changed Reference Type https://www.python.org/dev/security/ No Types Assigned https://www.python.org/dev/security/ Vendor Advisory Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions up to (excluding) 3.8.18 *cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.9.0 up to (excluding) 3.9.18 *cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.10.0 up to (excluding) 3.10.13 *cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.11.0 up to (excluding) 3.11.5
Vulnerability Scoring Details
Base CVSS Score: 5.3
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.27 }} 0.01%
score
0.50539
percentile