#VU26259 Out-of-bounds read in PHP


Published: 2020-03-20

Vulnerability identifier: #VU26259

Vulnerability risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-7064

CWE-ID: CWE-125

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 gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within exif_read_data() PHP function. A remote attacker can pass specially crafted data to the application that uses the vulnerable function, trigger one byte out-of-bounds read error and read contents of memory on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

PHP: 7.4.0 - 7.4.3, 7.3.0 - 7.3.15, 7.2.0 - 7.2.28


External links
http://bugs.php.net/bug.php?id=79282
http://www.php.net/ChangeLog-7.php#7.2.29
http://www.php.net/ChangeLog-7.php#7.3.16
http://www.php.net/ChangeLog-7.php#7.4.4


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.


Latest bulletins with this vulnerability