Vulnerability identifier: #VU16328
Vulnerability risk: Low
CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/U:Clear]
CVE-ID:
CWE-ID:
CWE-264
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 bypass security restrictions on the target system.
The weakness exists due to BCMath reports some errors and warnings (such as "exponent too large in raise") by directly writing to stderr[1]. A remote attacker can bypass PHP's error handling.
Mitigation
Update to version 7.3.0.
Vulnerable software versions
PHP: 7.0.23
External links
https://bugs.php.net/bug.php?id=75169
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. However, proof of concept for this vulnerability is available.