high CVSS 7.7

CVE-2024-5585·PHP vulnerability

In PHP versions 8.1.* before 8.1.29, 8.2.* before 8.2.20, 8.3.* before 8.3.8, the fix for CVE-2024-1874 does not work if the command name includes trailing spaces. Original issue: when using proc_open() command with array syntax, due to insufficient escaping, if the arguments of the executed command are controlled by a malicious user, the user can supply arguments that would execute arbitrary commands in Windows shell.

Severity
high
Software
PHP
Fixed in
8.3.8
Published
2024-06-09

Affected versions

From: 8.3.0

Until: 8.3.8

Fixed in: 8.3.8

How to fix this CVE

Update PHP to version 8.3.8 or later to patch the proc_open() command escaping vulnerability. This vulnerability allows attackers to bypass the CVE-2024-1874 fix by using trailing spaces in command names, potentially enabling arbitrary command execution on Windows systems. Apply the update immediately if you are running PHP 8.3.0 through 8.3.7.

sudo dnf update php

Defensia detects this vulnerability

How to check if you are affected

  1. Check your PHP version by running: php -v and verify it is 8.3.8 or later
  2. Identify if proc_open() is used in your application by searching source code: grep -r 'proc_open' /var/www/html/
  3. Review PHP error logs and system logs for unusual process execution patterns: grep 'proc_open\|shell_exec\|exec' /var/log/php*.log
  4. Verify the patch was applied by checking phpinfo() output in a web browser or CLI: php -i | grep 'PHP Version'

FAQ

What is CVE-2024-5585?

CVE-2024-5585 is a command injection vulnerability in PHP's proc_open() function where trailing spaces in command names allow attackers to bypass the previous CVE-2024-1874 fix, potentially executing arbitrary commands on Windows systems when processing untrusted input.

Is CVE-2024-5585 being actively exploited?

No, this vulnerability is not currently listed in the CISA Known Exploited Vulnerabilities catalog and no public exploits have been disclosed, though the attack vector requires direct control over proc_open() command parameters.

What versions of PHP are affected by CVE-2024-5585?

PHP versions 8.1.0 through 8.1.28, 8.2.0 through 8.2.19, and 8.3.0 through 8.3.7 are vulnerable. The fix is available in PHP 8.1.29, 8.2.20, and 8.3.8 respectively.

How do I check if my server is vulnerable to CVE-2024-5585?

Run 'php -v' and check if your version falls within 8.3.0-8.3.7. If it does, you are vulnerable and should update immediately. Also verify proc_open() usage in your application with 'grep -r proc_open /path/to/app'.

Does Defensia detect CVE-2024-5585?

Yes — Defensia's CVE advisory scanner compares installed package versions against the NVD database. If PHP is installed on a monitored server, CVE-2024-5585 will appear in your dashboard with remediation steps.

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References

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