#VU40519 Input validation error in PHP - CVE-2015-6527

Vulnerability identifier: #VU40519

Vulnerability risk: Medium

CVSSv4.0: 2.7 [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:U/U:Green]

CVE-ID: CVE-2015-6527

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 non-authenticated attacker to read and manipulate data.

The php_str_replace_in_subject function in ext/standard/string.c in PHP 7.x before 7.0.0 allows remote attackers to execute arbitrary code via a crafted value in the third argument to the str_ireplace function.

Mitigation
Install update from vendor's website.

Vulnerable software versions

PHP: 7.0.0

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External links
https://git.php.net/?p=php-src.git;a=commit;h=6aeee47b2cd47915ccfa3b41433a3f57aea24dd5
https://www.openwall.com/lists/oss-security/2015/07/30/11
https://bugs.php.net/bug.php?id=70140

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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.