Vulnerability identifier: #VU16909
Vulnerability risk: Low
CVSSv4.0: 7.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]
CVE-ID:
CWE-ID:
CWE-120
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 cause DoS condition on the target system.
The weakness exists due to buffer overflow in fetch_token when using enclen on an incomplete multibyte character. A remote attacker
can make a pointer return after the end of the buffer and cause the service to crash.
Mitigation
The vulnerability has been fixed in the versions 5.6.40, 7.1.26, 7.2.14, 7.3.1.
Vulnerable software versions
PHP: 5.5.6, 5.6.0 - 5.6.39, 7.1.0 - 7.1.25, 7.2.0 - 7.2.13, 7.3.0alpha1 - 7.3.0
External links
https://bugs.php.net/bug.php?id=77385
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.