SB2024100301 - Debian update for php8.2

Description

This security bulletin contains information about 3 vulnerabilities.

1) Input validation error (CVE-ID: CVE-2024-8925)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to insufficient validation of user-supplied input when parsing multipart form data. A remote attacker can pass specially crafted input to the application and bypass implemented security restrictions.

2) OS Command Injection (CVE-ID: CVE-2024-8926)

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation in PHP-CGI implementation. A remote attacker can send specially crafted HTTP request to the application and execute arbitrary OS commands on the system.

Note, the vulnerability exists due to incomplete fix for #VU91106 (CVE-2024-4577).

3) Security features bypass (CVE-ID: CVE-2024-8927)

CWE-ID: CWE-254 - Security Features

CVSSv4: 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

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to environment variable collision, which can lead to cgi.force_redirect bypass. A remote attacker can bypass implemented security restriction and gain unauthorized access to the application.

Remediation

Install update from vendor's website.

References

• https://lists.debian.org/debian-security-announce/2024/msg00193.html