Multiple vulnerabilities in PHP

1) Input validation error

EUVDB-ID: #VU72165

Risk: Medium

CVSSv4.0: 6.6 [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:U/U:Green]

CVE-ID: CVE-2023-0662

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input when parsing multipart request body. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

PHP: 7.2 - 8.2.2

CPE2.3

• cpe:2.3:a:php_group:php:7.2.34:*:*:*:*:*:*:*
• cpe:2.3:a:php_group:php:7.3.33:*:*:*:*:*:*:*
• cpe:2.3:a:php_group:php:7.4.33:*:*:*:*:*:*:*
• cpe:2.3:a:php_group:php:8.0.27:*:*:*:*:*:*:*
• cpe:2.3:a:php_group:php:8.1.15:*:*:*:*:*:*:*
• cpe:2.3:a:php_group:php:8.2.2:*:*:*:*:*:*:*

External links

https://www.php.net/ChangeLog-8.php#8.0.28
https://www.php.net/ChangeLog-8.php#8.2.3

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.

2) Use of insufficiently random values

EUVDB-ID: #VU72166

Risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-0567

CWE-ID: CWE-330 - Use of Insufficiently Random Values

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication.

The vulnerability exists due to an error within the Password_verify() function, which always returns true with some hashes. A remote attacker can bypass authentication process and gain unauthorized access to the application.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

PHP: 7.2 - 8.2.2

CPE2.3

External links

https://www.php.net/ChangeLog-8.php#8.0.28
https://www.php.net/ChangeLog-8.php#8.2.3
https://bugs.php.net/bug.php?id=81744

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.

3) Out-of-bounds write

EUVDB-ID: #VU72167

Risk: Medium

CVSSv4.0: 7.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-0568

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input in fopen_wrappers.c. A remote attacker can pass a specially crafted filename to the affected application, trigger a one-byte buffer overflow and crash the application or potentially execute arbitrary code.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

PHP: 7.2 - 8.2.2

CPE2.3

External links

https://www.php.net/ChangeLog-8.php#8.0.28
https://bugs.php.net/bug.php?id=81746
https://www.php.net/ChangeLog-8.php#8.2.3

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.