5.3
MEDIUM
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. 7, 2023, 4:20 a.m.

Remotely Exploitable :

Yes !

Impact Score :

1.4

Exploitability Score :

3.9
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.

Affected Products

The following products are affected by CVE-2023-40217 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Python python

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

Updated: 5 months, 3 weeks ago
0 stars 0 fork 0 watcher
Born at : May 12, 2024, 10 a.m. This repo has been linked 31 different CVEs too.

Github action to check findings of aws inspector scans

TypeScript

Updated: 2 months ago
10 stars 2 fork 2 watcher
Born at : Aug. 30, 2023, 10:27 a.m. This repo has been linked 2 different CVEs too.

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.

  • 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
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
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.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.08 }} 0.01%

score

0.35103

percentile

CVSS31 - Vulnerability Scoring System
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