CVE-2021-43617
"Laravel File Upload PHP Unauthorized Execution"
Description
Laravel Framework through 8.70.2 does not sufficiently block the upload of executable PHP content because Illuminate/Validation/Concerns/ValidatesAttributes.php lacks a check for .phar files, which are handled as application/x-httpd-php on systems based on Debian. NOTE: this CVE Record is for Laravel Framework, and is unrelated to any reports concerning incorrectly written user applications for image upload.
INFO
Published Date :
Nov. 14, 2021, 4:15 p.m.
Last Modified :
Nov. 18, 2021, 4:21 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2021-43617 has a 8 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-2021-43617.
| URL | Resource |
|---|---|
| https://github.com/laravel/framework/blob/2049de73aa099a113a287587df4cc522c90961f5/src/Illuminate/Validation/Concerns/ValidatesAttributes.php#L1331-L1333 | Third Party Advisory |
| https://salsa.debian.org/php-team/php/-/blob/dc253886b5b2e9bc8d9e36db787abb083a667fd8/debian/php-cgi.conf#L5-6 | Patch Third Party Advisory |
| https://salsa.debian.org/php-team/php/-/commit/dc253886b5b2e9bc8d9e36db787abb083a667fd8 | Patch Third Party Advisory |
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).
All CVE - PoC in GitHub
poc proofofconcept tester allcve cvegithub cvenew cvepoc cveupdate
None
This is a reproduction of PHP Laravel 8.70.1 - Cross Site Scripting (XSS) to Cross Site Request Forgery (CSRF) vulnerability
Dockerfile PHP JavaScript HTML Blade
None
None
Python
Research CVEs
None
CVE-2021-43617 bypass CRF
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-43617 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-43617 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 -
Initial Analysis by [email protected]
Nov. 18, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://github.com/laravel/framework/blob/2049de73aa099a113a287587df4cc522c90961f5/src/Illuminate/Validation/Concerns/ValidatesAttributes.php#L1331-L1333 No Types Assigned https://github.com/laravel/framework/blob/2049de73aa099a113a287587df4cc522c90961f5/src/Illuminate/Validation/Concerns/ValidatesAttributes.php#L1331-L1333 Third Party Advisory Changed Reference Type https://salsa.debian.org/php-team/php/-/blob/dc253886b5b2e9bc8d9e36db787abb083a667fd8/debian/php-cgi.conf#L5-6 No Types Assigned https://salsa.debian.org/php-team/php/-/blob/dc253886b5b2e9bc8d9e36db787abb083a667fd8/debian/php-cgi.conf#L5-6 Patch, Third Party Advisory Changed Reference Type https://salsa.debian.org/php-team/php/-/commit/dc253886b5b2e9bc8d9e36db787abb083a667fd8 No Types Assigned https://salsa.debian.org/php-team/php/-/commit/dc253886b5b2e9bc8d9e36db787abb083a667fd8 Patch, Third Party Advisory Added CWE NIST CWE-434 Added CPE Configuration OR *cpe:2.3:a:laravel:framework:*:*:*:*:*:*:*:* versions up to (including) 8.70.2 -
CVE Modified by [email protected]
Nov. 17, 2021
Action Type Old Value New Value Changed Description Laravel Framework through 8.70.2 does not sufficiently block the upload of executable PHP content because Illuminate/Validation/Concerns/ValidatesAttributes.php lacks a check for .phar files, which are handled as application/x-httpd-php on systems based on Debian. In some use cases, this may be related to file-type validation for image upload (e.g., differences between getClientOriginalExtension and other approaches). Laravel Framework through 8.70.2 does not sufficiently block the upload of executable PHP content because Illuminate/Validation/Concerns/ValidatesAttributes.php lacks a check for .phar files, which are handled as application/x-httpd-php on systems based on Debian. NOTE: this CVE Record is for Laravel Framework, and is unrelated to any reports concerning incorrectly written user applications for image upload. Removed Reference https://github.com/laravel/framework/blob/2049de73aa099a113a287587df4cc522c90961f5/src/Illuminate/Validation/Concerns/ValidatesAttributes.php#L1130-L1132 [No Types Assigned] Removed Reference https://hosein-vita.medium.com/laravel-8-x-image-upload-bypass-zero-day-852bd806019b [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-43617 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-2021-43617
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
2.86 }} 1.20%
score
0.90922
percentile