#VU9868 Denial of service in PHP

Vulnerability identifier: #VU9868

Vulnerability risk: Low

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

CVE-ID: N/A

CWE-ID: CWE-835

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 perform a denial of service attack.

The vulnerability exists due to an error in gdImageCreateFromGifCtx() function when processing images with GD library. A remote attacker can create a specially crafted image, pass it to vulnerable application and perform a denial of service (DoS) attack via infinite loop.

Mitigation
Update to version 7.0.27,7.1.13 or 7.2.1.

Vulnerable software versions

PHP: 7.0.0 - 7.0.26, 7.1.0 - 7.1.12, 7.2.0

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External links
https://bugs.php.net/bug.php?id=75571

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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.