#VU58331 Input validation error in PHP
Vulnerability identifier: #VU58331
Vulnerability risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-20
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
PHP
Universal components / Libraries /
Scripting languages
Vendor: PHP Group
Description
The vulnerability allows a remote attacker to inject arbitrary XML code.
The vulnerability exists due to insufficient validation of user-supplied input within the simplexml_load_file() PHP function when processing NULL byte character (e.g. %00). A remote attacker can pass specially crafted URL to the application and bypass implemented security restrictions.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
PHP: 8.0.0 - 8.0.12, 7.4 - 7.4.25, 7.3 - 7.3.32
External links
http://www.php.net/ChangeLog-8.php#8.0.13
http://www.php.net/ChangeLog-7.php#7.4.26
http://www.php.net/ChangeLog-7.php#7.3.33
http://bugs.php.net/bug.php?id=79971
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
