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Critical severity · published Nov 14, 2021
CVE-2021-43617
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…
9.8
CVSS
19.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)19.8% · higher than 97% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FR
Framework · Laravel
through 8.70.2 · source: NVD
Affected product
FR
Framework
Laravel
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-43617
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-43617
Third Party Advisory
https://github.com/laravel/framework/blob/2049de73aa099a113a287587df4cc522c90961f5/src/Illuminate/Validation/Concerns/ValidatesAttributes.php#L1331-L1333
Patch
https://salsa.debian.org/php-team/php/-/blob/dc253886b5b2e9bc8d9e36db787abb083a667fd8/debian/php-cgi.conf#L5-6
Patch
https://salsa.debian.org/php-team/php/-/commit/dc253886b5b2e9bc8d9e36db787abb083a667fd8
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