#VU9717 Buffer over-read in PHP - CVE-2017-11147

Vulnerability identifier: #VU9717

Vulnerability risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-11147

CWE-ID: CWE-126

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 or obtain potentially sensitive information on the target system.

The weakness exists due to a flaw in the PHAR archive handler. A remote attacker can supply malicious archive files, trigger buffer over-read in the phar_parse_pharfile function in ext/phar/phar.c and cause the PHP interpreter to crash or potentially disclose information.

Mitigation
Update to version 5.6.30 or 7.0.15.

Vulnerable software versions

PHP: 5.0 - 5.0.5, 5.1 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.27, 5.4.0 - 5.4.44, 5.5.0 - 5.5.38, 5.6.0 - 5.6.29, 7.0.0 - 7.0.14

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External links
https://bugs.php.net/bug.php?id=73773

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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.